Rice seedling transplanting device and method using mulch film

Abstract

The application discloses a rice film mulching transplanting device and method, relates to the technical field of rice transplanting, and solves the problem that the rice film mulching transplanting device is inconvenient to use and difficult to adjust the number of rice seedlings according to the size of a rice field, thereby reducing the rice seedling efficiency. The rice film mulching transplanting device and method comprise a vehicle frame, a plurality of rice storage mechanisms are movably arranged on one side of the vehicle frame, a rice transplanting mechanism is movably arranged on the outer side of each of the rice storage mechanisms, a turning mechanism is movably arranged on the two sides of the rice transplanting mechanism, and a film laying mechanism is movably arranged on the outer side of the rice transplanting mechanism. The film laying mechanism is arranged, the plastic film on the surface of a film laying roller can be laid on the ground through the rolling of the film laying roller, the device can realize automatic rice seedling and film mulching, and the loss of water in the soil of the rice is reduced.

Description

Technical Field

[0001] This invention relates to the field of rice transplanting, specifically to a rice transplanting device and method using plastic film mulching. Background Technology

[0002] Rice transplanting refers to planting rice seedlings into paddy fields, or transplanting rice seedlings from nursery beds to paddy fields. During seed production, rice seedlings are often planted too densely, which hinders growth. Manual or machine transplanting allows the rice more space to grow. Rice transplanting is usually done using a rice transplanter, an agricultural machine that plants rice seedlings into the paddy field. During planting, a mechanical claw first removes several rice seedlings from the nursery bed and plants them into the soil. To maintain a right angle between the nursery bed and the ground, the front end of the mechanical claw must move in an elliptical curve. After transplanting, the rice seedlings are usually covered with mulch film.

[0003] Mulching refers to the practice of covering the soil surface with agricultural plastic film. It helps reduce raindrop impact, prevents erosion and crust formation; effectively reduces soil moisture evaporation, conserves moisture during droughts and improves moisture levels after rain, promotes crop water absorption and growth, and increases soil water use efficiency; it also helps maintain suitable soil temperature and humidity, slows down soil temperature drop, and prolongs the duration of temperature decline, which is beneficial for fertilizer decomposition and improves soil fertility.

[0004] Existing rice transplanting devices typically require manual mulching of the rice paddies, which is inconvenient. Furthermore, the devices cannot easily adjust the number of rice seedlings to be transplanted according to the size of the paddy field, resulting in low transplanting efficiency. Therefore, they do not meet the current needs. In response, we propose a rice mulch-covered transplanting device and transplanting method. Summary of the Invention

[0005] The purpose of this invention is to provide a rice transplanting device and method with plastic film covering, in order to solve the problems mentioned in the background art, such as the need for manual laying of plastic film on the rice during use, which is very inconvenient, and the difficulty in adjusting the number of rice seedlings to be transplanted according to the size of the paddy field, resulting in low transplanting efficiency.

[0006] To achieve the above objectives, the present invention provides the following technical solution: a rice mulch transplanting device, comprising a frame, a plurality of rice storage mechanisms movably mounted on one side of the frame, a transplanting mechanism movably mounted on the outer side of each rice storage mechanism, a turning mechanism movably mounted on both sides of each transplanting mechanism, and a film laying mechanism movably mounted on the outer side of each transplanting mechanism.

[0007] The flipping mechanism includes a rotating ring, flipping plates, through holes, spring grooves, compression springs, limit buckles, inclined grooves, pull rods, and pull slots. Multiple flipping plates are fixedly installed on the outer surface of the rotating ring. Each rotating ring has a through hole at its center, and each through hole has eight spring grooves inside. Limit buckles are movably installed inside each spring groove, and compression springs are movably installed between the limit buckles and the spring grooves. Inclined grooves are provided on the outer surface of each limit buckle, and a pull rod is fixedly installed at the end of each limit buckle near the compression spring. A crossbar is fixedly installed on the surface of the rotating ring, and a pull slot is provided on the outer surface of each crossbar. The pull rods are movably engaged into the pull slots.

[0008] Preferably, the rice storage mechanism includes a sliding plate, a support frame, a guide rail plate, and a rice transplanting trough. The support frame is movably mounted on the top surface of the vehicle frame. A sliding plate is movably mounted on the top of each support frame. A guide rail plate is fixedly mounted between each support frame and the sliding plate. A sliding block is fixedly mounted on the side of each sliding plate near the guide rail plate. The sliding block slides into the interior of the guide rail plate. Two rice transplanting troughs are provided on the side of each sliding plate near the rice transplanting mechanism.

[0009] Preferably, the rice transplanting mechanism includes a connecting plate, a transplanting shaft, a driving gear, a driven gear, a base, a connecting rod, a swing rod, a transplanting plate, and shaft slots. The connecting plates are movably mounted on the side of the frame near the rice storage mechanism. A base is fixedly mounted on the outer side of each connecting plate. Two assembly plates are fixedly mounted on the top of each base. The transplanting shaft movably passes through the surface of each assembly plate. A driving gear is movably mounted on the outer surface of each transplanting shaft. A driven gear is meshed with the outer side of each driving gear. A connecting rod is axially connected to the outer surface of each driven gear. A swing rod is axially connected to the end of each connecting rod. One end of the swing rod is axially connected to the assembly plate, and the other end of the swing rod is threadedly connected to the transplanting plate. The transplanting plate is provided on the bottom surface of all swing rods. Four shaft slots are provided at both ends of the transplanting shaft.

[0010] Preferably, the film-laying mechanism includes a film-laying roller, a film-laying shaft, a fixing sleeve, and a snap-fit ​​plate. The snap-fit ​​plates are all movably mounted on the surface of the base. The fixing sleeve is fixedly connected to the outer side of each snap-fit ​​plate. The film-laying shaft is movably passed through the center of each fixing sleeve. The film-laying roller is movably mounted on the outer surface of each film-laying shaft.

[0011] Preferably, both ends of the rice transplanting shaft are movably inserted into the through hole, and the limiting buckles are movably inserted into the shaft slot.

[0012] Preferably, the side surface of the frame near the connecting plate is provided with a frame slot, and the connecting plates are all movably inserted into the frame slot. The connecting plates are all rigidly connected to the frame and the support frame by bolts.

[0013] Preferably, a servo motor is fixedly installed on the outer side of one of the outermost rice transplanting shafts, the servo motor is connected to the rice transplanting shaft via a coupling, and the driven gear is rigidly connected to the base via a thread.

[0014] Preferably, one of the film-laying shafts has a transmission belt on its outer surface, and the film-laying shaft and the rice-planting shaft are movably connected by the transmission belt.

[0015] Preferably, the rice transplanting plates are all installed at the position of the rice transplanting trough and pass through the inside of the rice transplanting trough, and an electric telescopic cylinder is fixedly installed on one side of each guide rail plate, and the output end of each electric telescopic cylinder is fixedly connected to the sliding block.

[0016] A rice transplanting method using a rice mulch film transplanting device, the method comprising the following steps:

[0017] Step A: Place the rice-filled box on the surface of the sliding plate, supporting the bottom of the rice box with the support frame, and connect the frame to the vehicle body. Start the vehicle and control the servo motor to drive the output end to rotate, thereby driving the transplanting shaft to rotate. When the transplanting shaft rotates, it drives the drive gear to rotate, which in turn drives the driven gear to rotate. When the driven gear rotates, it drives the connecting rod to rotate. At this time, the connecting rod, the swing rod, and the assembly plate form a crank-connecting rod mechanism. When the connecting rod rotates, it drives the swing rod to swing up and down in an arc shape, thereby causing the transplanting plate to pass through the inside of the transplanting groove and press the rice placed on the surface of the sliding plate into the paddy field, thus completing the transplanting action.

[0018] Step B: When the transplanting shaft rotates, it will also drive the rotating ring to rotate. When the rotating ring rotates, it will drive the turning plate to move in the soil, thereby realizing the soil turning operation of the paddy field. When the transplanting plate presses the rice to realize the transplanting, the electric telescopic cylinder is controlled to push the sliding block, so that the sliding block moves inside the guide rail plate, thereby driving the sliding plate to move laterally on the surface of the support frame. This allows the transplanting plate to press the rice in different positions for transplanting, preventing the rice that is not in the transplanting trough from not being able to be transplanted.

[0019] Step C: When the rice transplanting shaft is rotating, it will drive the film-laying shaft to rotate synchronously through the transmission belt. At this time, the film-laying shaft will drive the film-laying roller on the surface to rotate, thereby rotating the plastic film on the surface of the film-laying roller and laying it on the ground. Since the rice has been transplanted by pressing it with the transplanting board, the plastic film will be laid on the surface of the seedlings to cover them, thus realizing rice transplanting with plastic film covering.

[0020] Step D: When the device is in use, the number of transplanting mechanisms, turning mechanisms, and film-laying mechanisms carried by the device can be changed by pulling the transplanting shaft out of or inserting it into the through hole. This allows the device to carry different numbers of transplanting mechanisms, turning mechanisms, and film-laying mechanisms according to the width of the paddy field to transplant rice with plastic film covering, making the device easier to use.

[0021] Step E: When it is necessary to remove the transplanting shaft, first pull the lever outward from the pull groove, so that the lever pulls the limit buckle back into the spring groove. At this time, pull the transplanting shaft out from the through hole, thus completing the removal of the transplanting shaft. When it is necessary to install the transplanting shaft, directly insert the transplanting shaft into the through hole. At this time, the surface of the transplanting shaft will hit the inclined groove on the surface of the limit buckle, so that the limit buckle will retract into the spring groove. Subsequently, the limit buckle will be ejected outward by the elastic potential energy of the compressed spring and locked into the inside of the shaft slot, so that the transplanting shaft is firmly on the surface of the rotating ring. When the transplanting shaft rotates, the rotating ring will rotate synchronously through the cooperation of the limit buckle and the shaft slot.

[0022] Compared with the prior art, the beneficial effects of the present invention are:

[0023] 1. The present invention, through the setting of the film laying mechanism, enables the device to lay the plastic film on the ground by following the rolling of the film laying roller when transplanting rice seedlings, so that the plastic film covers the rice. Thus, the device can realize automatic transplanting and film covering of rice at the same time, reducing the loss of soil moisture.

[0024] 2. This invention utilizes the combination of a compression spring and a limiting buckle. When the transplanting shaft needs to be disassembled, the pulling rod can be moved outwards towards the pull groove, causing the limiting buckle to retract into the spring groove. At this point, the transplanting shaft can be pulled out of the through hole, thus completing the disassembly. When the transplanting shaft needs to be installed, it can be directly inserted into the through hole. The surface of the transplanting shaft will impact the inclined groove on the surface of the limiting buckle, causing the limiting buckle to retract into the spring groove. Subsequently, the limiting buckle will be ejected outwards by the elastic potential energy of the compression spring and locked into the shaft slot, allowing the transplanting shaft to be securely mounted on the surface of the rotating ring. When the transplanting shaft rotates, the combination of the limiting buckle and the shaft slot will drive the rotating ring to rotate synchronously. Attached Figure Description

[0025] Figure 1 This is a schematic diagram of the overall structure of the present invention;

[0026] Figure 2 This is a cross-sectional side view of the position of the rice transplanting shaft in this invention;

[0027] Figure 3 This is a top cross-sectional view of the entire invention;

[0028] Figure 4 This is a cross-sectional side view of the film-laying pivot position of the present invention;

[0029] Figure 5 This is a cross-sectional front view of the entire invention;

[0030] Figure 6 This is a partial structural diagram of part A of the present invention.

[0031] In the diagram: 1. Frame; 2. Rice storage mechanism; 201. Sliding plate; 202. Support frame; 203. Guide rail plate; 204. Transplanting trough; 3. Transplanting mechanism; 301. Connecting plate; 302. Transplanting shaft; 303. Drive gear; 304. Driven gear; 305. Base; 306. Connecting rod; 307. Swinging rod; 308. Transplanting plate; 309. Shaft groove; 4. Tilting mechanism; 401. Rotating ring; 402. Flipping plate; 403. Through hole; 404. Spring groove; 405. Compression spring; 406. Limit buckle; 407. Inclined groove; 408. Pulling rod; 409. Pulling groove; 5. Film laying mechanism; 501. Film laying roller; 502. Film laying shaft; 503. Fixing sleeve rod; 504. Snap-fit ​​plate; 6. Bolt; 7. Frame slot; 8. Servo motor; 9. Drive belt. Detailed Implementation

[0032] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present invention. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments.

[0033] The electric telescopic cylinder (model TYSC250) mentioned in this invention can be obtained from the market or through private customization.

[0034] Please see Figure 1 An embodiment of the present invention provides a rice mulch transplanting device, comprising a frame 1, a plurality of rice storage mechanisms 2 movably mounted on one side of the frame 1, transplanting mechanisms 3 movably mounted on the outer side of each rice storage mechanism 2, a turning mechanism 4 movably mounted on both sides of each transplanting mechanism 3, and a film laying mechanism 5 movably mounted on the outer side of each transplanting mechanism 3.

[0035] refer to Figure 4 and Figure 6The flipping mechanism 4 includes a rotating ring 401, flipping plates 402, through holes 403, spring grooves 404, compression springs 405, limit buckles 406, inclined grooves 407, pulling rods 408, and pulling grooves 409. Multiple flipping plates 402 are fixedly installed on the outer surface of the rotating ring 401. A through hole 403 is provided at the center of each rotating ring 401. Eight spring grooves 404 are provided inside each through hole 403. Limit buckles 406 are movably installed inside each spring groove 404. Compression springs 405 are movably installed between the limit buckles 406 and the inside of each spring groove 404. Inclined grooves 407 are provided on the outer surface of each limit buckle 406. Each of the limit buckles 406 has a pull rod 408 fixedly installed at one end near the compression spring 405. A cross bar is fixedly installed on the surface of the rotating ring 401. Each of the cross bars has a pull groove 409 on its outer surface. The pull rod 408 is movably inserted into the pull groove 409. When the device is in use, the number of transplanting mechanisms 3, turning mechanisms 4, and film-laying mechanisms 5 carried by the device can be changed by pulling the transplanting shaft 302 out of or into the through hole 403. This allows the device to carry different numbers of transplanting mechanisms 3, turning mechanisms 4, and film-laying mechanisms 5 for mulching rice according to the width of the paddy field, making the device convenient to use.

[0036] refer to Figure 2 and Figure 3 The rice storage mechanism 2 includes a sliding plate 201, a support frame 202, a guide rail plate 203, and a rice transplanting trough 204. The support frame 202 is movably mounted on the top surface of the frame 1. The top of the support frame 202 is movably mounted with a sliding plate 201. The guide rail plate 203 is fixedly mounted between the support frame 202 and the sliding plate 201. A sliding block is fixedly mounted on the side of the sliding plate 201 near the guide rail plate 203. The sliding block slides into the interior of the guide rail plate 203. Two rice transplanting troughs 204 are provided on the side of the sliding plate 201 near the rice transplanting mechanism 3.

[0037] refer to Figure 2 , Figure 4 and Figure 5The rice transplanting mechanism 3 includes a connecting plate 301, a transplanting shaft 302, a driving gear 303, a driven gear 304, a base 305, a connecting rod 306, a swing rod 307, a transplanting plate 308, and a shaft slot 309. The connecting plates 301 are movably mounted on the side surface of the frame 1 near the rice storage mechanism 2. A base 305 is fixedly mounted on the outer side of each connecting plate 301. Two mounting plates are fixedly mounted on the top of each base 305. The transplanting shaft 302 movably passes through the surface of each mounting plate. The outer surface of each component is movably mounted with a drive gear 303. The outer side of each drive gear 303 is meshed with a driven gear 304. The outer surface of each driven gear 304 is axially connected with a connecting rod 306. The end of each connecting rod 306 is axially connected with a swing rod 307. One end of the swing rod 307 is connected to the assembly plate via a shaft. The other end of the swing rod 307 is threadedly connected to a rice planting plate 308. The bottom surface of all swing rods 307 is provided with a rice planting plate 308. Both ends of the rice planting shaft 302 are provided with four shaft slots 309.

[0038] By adopting the above technical solution, and through the cooperation of the compression spring 405 and the limiting buckle 406, when it is necessary to remove the transplanting shaft 302, the pulling rod 408 can be moved outwards towards the pulling groove 409, causing the pulling rod 408 to pull the limiting buckle 406 back into the spring groove 404. At this time, the transplanting shaft 302 can be pulled out from the through hole 403, thus completing the removal of the transplanting shaft 302. When it is necessary to install the transplanting shaft 302, it can be directly inserted into the through hole. Inside 403, the surface of the transplanting shaft 302 will impact the inclined groove 407 on the surface of the limiting buckle 406, causing the limiting buckle 406 to retract into the spring groove 404. Subsequently, the limiting buckle 406 will be ejected outward by the elastic potential energy of the compression spring 405 and locked into the shaft slot 309, so that the transplanting shaft 302 can be firmly fixed on the surface of the rotating ring 401. When the transplanting shaft 302 rotates, it can drive the rotating ring 401 to rotate synchronously through the cooperation of the limiting buckle 406 and the shaft slot 309.

[0039] refer to Figure 2 and Figure 4The aforementioned film-laying mechanism 5 includes a film-laying roller 501, a film-laying rotating shaft 502, a fixing sleeve 503, and a snap-fit ​​plate 504. The snap-fit ​​plates 504 are all movably mounted on the surface of the base 305. The fixing sleeve 503 is fixedly connected to the outer side of each snap-fit ​​plate 504. The film-laying rotating shaft 502 is movably passed through the center of each fixing sleeve 503. The film-laying roller 501 is movably mounted on the outer surface of the film-laying rotating shaft 502. With the arrangement of the film-laying mechanism 5, when transplanting rice seedlings, the plastic film on the surface of the film-laying roller 501 can be laid on the ground by the rolling of the film-laying roller 501, so that the plastic film covers the rice. Thus, the device can realize automatic transplanting and mulching of rice at the same time, reducing the loss of soil moisture.

[0040] refer to Figure 6 Both ends of the rice transplanting shaft 302 are movably inserted into the through hole 403, and the limit buckles 406 are movably inserted into the shaft slot 309.

[0041] Please refer to Figure 2 The frame 1 has a frame slot 7 on the side surface near the connecting plate 301. The connecting plates 301 are all movably inserted into the frame slot 7. The connecting plates 301 are all rigidly connected to the frame 1 and the support frame 202 by bolts 6.

[0042] By adopting the above technical solution, the position of the rice transplanting mechanism 3 on the outside of the frame 1 can be adjusted by adjusting the position of the connecting plate 301 inside the frame slot 7 during use, thereby facilitating the adjustment of the rice transplanting position.

[0043] One of the outermost transplanting shafts 302 has a servo motor 8 fixedly installed on its outer side. The servo motor 8 is connected to the transplanting shaft 302 via a coupling. The driven gear 304 is rigidly connected to the base 305 via a thread. One of the film-laying shafts 502 has a transmission belt 9 on its outer surface. The film-laying shaft 502 is movably connected to the transplanting shaft 302 via the transmission belt 9. The transplanting plates 308 are all installed at the position of the transplanting trough 204 and pass through the interior of the transplanting trough 204. An electric telescopic cylinder is fixedly installed on one side of the guide rail plate 203. The output end of the electric telescopic cylinder is fixedly connected to the sliding block.

[0044] A rice transplanting method using a rice mulch film transplanting device includes the following steps:

[0045] Step A: Place the rice box on the surface of the sliding plate 201, so that the bottom of the rice box is supported by the support frame 202. Connect the frame 1 to the vehicle body. Start the vehicle and control the servo motor 8 to drive the output end to rotate, thereby driving the transplanting shaft 302 to rotate. When the transplanting shaft 302 rotates, it will drive the drive gear 303 to rotate. When the drive gear 303 rotates, it will drive the driven gear 304 to rotate. When the driven gear 304 rotates, it will drive the connecting rod 306 to rotate. At this time, the connecting rod 306, the swing rod 307 and the assembly plate form a crank-connecting rod mechanism. When the connecting rod 306 rotates, it will drive the swing rod 307 to swing up and down in an arc shape, so that the transplanting plate 308 passes through the inside of the transplanting groove 204 and presses the rice placed on the surface of the sliding plate 201 into the paddy field, thereby completing the transplanting action.

[0046] Step B: When the transplanting shaft 302 rotates, it will drive the rotating ring 401 to rotate. When the rotating ring 401 rotates, it will drive the turning plate 402 to move in the soil, thereby realizing the soil turning operation of the paddy field. When the transplanting plate 308 presses the rice to realize the transplanting, the electric telescopic cylinder is controlled to push the sliding block, so that the sliding block moves inside the guide plate 203, thereby driving the sliding plate 201 to move laterally on the surface of the support frame 202, so that the transplanting plate 308 presses the rice in different positions to transplant, preventing the rice that is not in the transplanting groove 204 from not being able to be transplanted.

[0047] Step C: When the rice transplanting shaft 302 rotates, it will drive the film laying shaft 502 to rotate synchronously through the transmission belt 9. At this time, the film laying shaft 502 will drive the film laying roller 501 on the surface to rotate, thereby turning out the plastic film on the surface of the film laying roller 501 and laying it on the ground. Since the rice has been transplanted by pressing the rice transplanting plate 308, the plastic film will be laid on the surface of the seedlings to cover them, thereby realizing rice transplanting with plastic film covering.

[0048] Step D: When the device is in use, the number of transplanting mechanisms 3, turning mechanisms 4 and film-laying mechanisms 5 carried by the device can be changed by pulling the transplanting shaft 302 out of or inserting it into the through hole 403. This allows the device to carry different numbers of transplanting mechanisms 3, turning mechanisms 4 and film-laying mechanisms 5 according to the width of the paddy field to transplant rice under plastic film mulch, making the device easier to use.

[0049] Step E: When it is necessary to remove the transplanting shaft 302, first move the pull rod 408 outwards towards the pull groove 409, causing the pull rod 408 to pull the limit buckle 406 back into the spring groove 404. At this time, pull the transplanting shaft 302 out of the through hole 403, thus completing the removal of the transplanting shaft 302. When it is necessary to install the transplanting shaft 302, simply insert the transplanting shaft 302 into the through hole 403. The surface of 02 will impact the inclined groove 407 on the surface of the limit buckle 406, causing the limit buckle 406 to retract into the spring groove 404. Subsequently, the limit buckle 406 will be ejected outward by the elastic potential energy of the compression spring 405 and locked into the inside of the rotating shaft slot 309, so that the transplanting shaft 302 is firmly fixed on the surface of the rotating ring 401. When the transplanting shaft 302 rotates, it drives the rotating ring 401 to rotate synchronously through the cooperation of the limit buckle 406 and the rotating shaft slot 309.

[0050] It will be apparent to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above, and that the invention can be implemented in other specific forms without departing from its spirit or essential characteristics. Therefore, the embodiments should be considered in all respects as exemplary and non-limiting, and the scope of the invention is defined by the appended claims rather than the foregoing description. Thus, all variations falling within the meaning and scope of equivalents of the claims are intended to be included within the present invention. No reference numerals in the claims should be construed as limiting the scope of the claims.

Claims

1. A rice transplanting device with plastic film mulching, comprising a frame (1), characterized in that: Multiple rice storage mechanisms (2) are movably installed on one side of the frame (1), and rice planting mechanisms (3) are movably installed on the outer side of each rice storage mechanism (2). Turning mechanisms (4) are movably installed on both sides of each rice planting mechanism (3), and film laying mechanisms (5) are movably installed on the outer side of each rice planting mechanism (3). The rice transplanting mechanism (3) includes a connecting plate (301), a rice transplanting shaft (302), a driving gear (303), a driven gear (304), a base (305), a connecting rod (306), a swing rod (307), a rice transplanting plate (308), and a shaft slot (309). The connecting plates (301) are all movably mounted on the side surface of the frame (1) near the rice storage mechanism (2). The base (305) is fixedly mounted on the outer side of the connecting plates (301). Two mounting plates are fixedly mounted on the top of the bases (305). The rice transplanting shaft (302) is movably passed through the surface of each mounting plate. The outer surface of each of the components is movably mounted with a drive gear (303), and the outer side of each drive gear (303) is meshed with a driven gear (304). The outer surface of each driven gear (304) is axially connected with a connecting rod (306), and the end of each connecting rod (306) is axially connected with a swing rod (307). One end of the swing rod (307) is connected to the assembly plate via a shaft, and the other end of the swing rod (307) is threadedly connected to the rice planting plate (308). The bottom surface of all the swing rods (307) is provided with the rice planting plate (308), and both ends of the rice planting shaft (302) are provided with four shaft slots (309). The flipping mechanism (4) includes a rotating ring (401), a flipping plate (402), a through hole (403), a spring groove (404), a compression spring (405), a limit buckle (406), a slanted groove (407), a pull rod (408), and a pull groove (409). Multiple flipping plates (402) are fixedly installed on the outer surface of the rotating ring (401). A through hole (403) is provided at the center of each rotating ring (401). Eight spring grooves (404) are provided inside each through hole (403). Limit buckles (406) are movably installed inside each spring groove (404). The limit buckles (406) are connected to the springs. Compression springs (405) are movably installed inside the grooves (404). The outer surface of the limiting buckle (406) is provided with inclined grooves (407). A pull rod (408) is fixedly installed at one end of the limiting buckle (406) near the compression spring (405). A cross bar is fixedly installed on the surface of the rotating ring (401). A pull groove (409) is provided on the outer surface of the cross bar. The pull rod (408) is movably inserted into the pull groove (409). Both ends of the rice transplanting shaft (302) are movably inserted into the through hole (403). The limiting buckle (406) is movably inserted into the shaft slot (309).

2. The rice transplanting device with plastic film mulching according to claim 1, characterized in that: The rice storage mechanism (2) includes a sliding plate (201), a support frame (202), a guide rail plate (203), and a rice transplanting trough (204). The support frame (202) is movably installed on the top surface of the frame (1). The top of the support frame (202) is movably installed with a sliding plate (201). The guide rail plate (203) is fixedly installed between the support frame (202) and the sliding plate (201). A sliding block is fixedly installed on the side of the sliding plate (201) near the guide rail plate (203). The sliding block slides into the interior of the guide rail plate (203). Two rice transplanting troughs (204) are provided on the side of the sliding plate (201) near the rice transplanting mechanism (3).

3. The rice transplanting device with plastic film mulching according to claim 2, characterized in that: The film-laying mechanism (5) includes a film-laying roller (501), a film-laying shaft (502), a fixing sleeve (503), and a snap-fit ​​plate (504). The snap-fit ​​plates (504) are all movably mounted on the surface of the base (305). The outer side of each snap-fit ​​plate (504) is fixedly connected to a fixing sleeve (503). The center of each fixing sleeve (503) is movably penetrated by the film-laying shaft (502). The outer surface of the film-laying shaft (502) is movably mounted with the film-laying roller (501).

4. The rice transplanting device with plastic film mulching according to claim 3, characterized in that: The frame (1) has a frame slot (7) on one side surface near the connecting plate (301). The connecting plates (301) are all movably inserted into the frame slot (7). The connecting plates (301) are all rigidly connected to the frame (1) and the support frame (202) by bolts (6).

5. A rice transplanting device with plastic film mulching according to claim 4, characterized in that: A servo motor (8) is fixedly installed on the outer side of one of the outermost rice transplanting shafts (302). The servo motor (8) is connected to the rice transplanting shaft (302) via a coupling. The driven gear (304) is rigidly connected to the base (305) via a thread.

6. A rice transplanting device with plastic film mulching according to claim 5, characterized in that: One of the film-laying shafts (502) has a transmission belt (9) on its outer surface, and the film-laying shaft (502) and the rice transplanting shaft (302) are movably connected by the transmission belt (9).

7. A rice transplanting device with plastic film mulching according to claim 6, characterized in that: The transplanting plates (308) are all installed in the position of the transplanting trough (204) and pass through the inside of the transplanting trough (204). An electric telescopic cylinder is fixedly installed on one side of the guide rail plate (203), and the output end of the electric telescopic cylinder is fixedly connected to the sliding block.

8. A method for transplanting rice seedlings, characterized in that: The rice transplanting method using the rice mulch transplanting device described in claim 7 includes the following steps: Step A: Place the box containing rice on the surface of the sliding plate (201), so that the bottom of the rice box is supported by the support frame (202), and connect the frame (1) to the vehicle body. Start the vehicle at this time, and control the servo motor (8) to drive the output end to rotate, thereby driving the transplanting shaft (302) to rotate. When the transplanting shaft (302) rotates, it will drive the drive gear (303) to rotate. When the drive gear (303) rotates, it will simultaneously drive the driven gear (304) to rotate. When the driven gear (304) rotates, it will drive the connecting rod (306) to rotate. At this time, the connecting rod (306), the swing rod (307) and the assembly plate form a crank-connecting rod mechanism. When the connecting rod (306) rotates, it will drive the swing rod (307) to swing up and down in an arc shape, so that the transplanting plate (308) passes through the inside of the transplanting groove (204) and presses the rice placed on the surface of the sliding plate (201) into the paddy field, thereby completing the transplanting action. Step B: When the transplanting shaft (302) is rotating, it will drive the rotating ring (401) to rotate. When the rotating ring (401) is rotating, it will drive the turning plate (402) to move in the soil, thereby realizing the soil turning operation of the paddy field. When the transplanting plate (308) presses the rice to realize the transplanting, the electric telescopic cylinder is controlled to push the sliding block, so that the sliding block moves inside the guide plate (203), thereby driving the sliding plate (201) to move laterally on the surface of the support frame (202), so that the transplanting plate (308) presses the rice in different positions to transplant, preventing the rice that is not in the transplanting trough (204) from being unable to be transplanted. Step C: When the rice transplanting shaft (302) is rotating, it will drive the film laying shaft (502) to rotate synchronously through the transmission belt (9). At this time, when the film laying shaft (502) is rotating, it will drive the film laying roller (501) on the surface to rotate, thereby turning out the plastic film on the surface of the film laying roller (501) and laying it on the ground. Since the rice has been transplanted by pressing through the rice transplanting board (308), the plastic film will be laid on the surface of the seedlings and cover the seedlings, thereby realizing rice film covering transplanting. Step D: When the device is in use, the number of transplanting mechanism (3), turning mechanism (4) and film laying mechanism (5) carried by the device can be changed by pulling out or inserting the transplanting shaft (302) from the inside of the through hole (403). This allows the device to carry different numbers of transplanting mechanism (3), turning mechanism (4) and film laying mechanism (5) to perform mulch transplanting of rice according to the width of the paddy field, making the device easier to use. Step E: When it is necessary to remove the transplanting shaft (302), first move the pull rod (408) to the outside of the pull groove (409) so that the pull rod (408) pulls the limit buckle (406) back into the spring groove (404). At this time, pull the transplanting shaft (302) out of the through hole (403) to complete the removal of the transplanting shaft (302). When it is necessary to install the transplanting shaft (302), directly insert the transplanting shaft (302) into the through hole (403). At this time, the transplanting shaft (302) will be removed. 2) The surface will impact the inclined groove (407) on the surface of the limit buckle (406), causing the limit buckle (406) to retract into the inside of the spring groove (404). Subsequently, the limit buckle (406) will be ejected outward by the elastic potential energy of the compression spring (405) and locked into the inside of the rotating shaft slot (309), so that the rice transplanting shaft (302) is firmly fixed on the surface of the rotating ring (401). When the rice transplanting shaft (302) rotates, it drives the rotating ring (401) to rotate synchronously through the cooperation of the limit buckle (406) and the rotating shaft slot (309).

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