Automatic rice transplanting and film mulching equipment for rice field film mulching

By designing an automatic rice transplanting and mulching equipment, the problem of manual cutting of the film at the edge of the mulched rice transplanting machinery was solved, realizing the automated cutting of the film and transplanting, improving the degree of mechanization, reducing manual intervention, and increasing production efficiency.

CN120937594APending Publication Date: 2025-11-14HEILONGJIANG PROV AGRI MACHINERY ENG SCI INST +1
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Patent Information

Application Number
CN202511368241.6
Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
Filing Date
2025-09-24
Publication Date
2025-11-14

AI Technical Summary

Technical Problem

Existing mulched rice transplanting machinery requires manual cutting of the film when moving to the edge, which is not sufficiently automated and cannot achieve fully automated operation.

Method used

An automatic rice transplanting and mulching device for paddy fields was designed, including a forward mechanism, an installation platform, a feed roller, an automatic transplanting mechanism, a tensioning mechanism, a feeding component, a film pressing and cutting component, and a drive unit. The device achieves automatic cutting and transplanting of the mulch through mechanized settings, and the edge of the mulch is provided with toothed holes to facilitate mechanized operation.

Benefits of technology

The automated cutting and transplanting of rice seedlings under mulch has been achieved, which has increased the level of mechanization, reduced manual intervention, and improved production efficiency.

✦ Generated by Eureka AI based on patent content.

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Abstract

The invention belongs to the technical field of rice planting machinery, and particularly relates to automatic rice transplanting and film mulching equipment for rice field film mulching, which comprises an advancing mechanism and a mounting platform connected to the tail end of the advancing mechanism in the advancing direction, and the mounting platform is sequentially provided with a material roller and an automatic rice transplanting mechanism from front to back in the moving direction; a film pressing and cutting mechanism is arranged between the material roller and the automatic rice transplanting mechanism, and tooth holes are formed in the edges of the two sides of an adopted covering film; the film pressing and cutting mechanism comprises a tensioning mechanism communicated with the material roller and used for tensioning the covering film, and a film cutting mechanism communicated with the material roller and used for cutting the covering film. The feeding assembly is connected to the bottom of the mounting platform, the feeding assembly is meshed with the edge of the covering film, and the feeding assembly is in transmission fit with the covering film; the film pressing and cutting assembly is connected to the bottom of the mounting platform, the film pressing and cutting assembly is arranged on the upper surface of the covering film in a pressing mode, the film pressing and cutting assembly comprises a cutter which is vertically arranged in a sliding mode, and the cutter is used for cutting off the covering film; and the driving part is arranged on the mounting platform, and the driving part is in transmission fit with the cutter.
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Description

Technical Field

[0001] This invention belongs to the field of rice planting machinery technology, and in particular relates to an automatic rice transplanting and mulching device for paddy fields. Background Technology

[0002] Rice mulching transplanting, as a novel rice cultivation technology, weakens the heat exchange between the soil and the outside environment through mulching, reduces latent heat loss, improves soil heat absorption efficiency, and increases the accumulated temperature of the mulched microenvironment throughout the year, providing suitable temperatures for rice to promote early and rapid growth. Mulching can also reduce water evaporation, retain soil moisture, reduce irrigation frequency to save water resources, and at the same time reduce fertilizer leaching and volatilization, improve fertilizer utilization, and reduce production costs. In addition, mulching can also inhibit weed growth and reduce the occurrence and spread of pests and diseases.

[0003] However, current mulching and transplanting machinery only automates the mulching and transplanting processes. When the machinery moves to the edge, the mulch needs to be cut manually. After changing the planting area, one end of the mulch needs to be fixed manually. It is clear that the automation level of existing mulching and transplanting machinery needs to be improved. Therefore, there is an urgent need for an automatic rice transplanting and mulching equipment for paddy fields. Summary of the Invention

[0004] The purpose of this invention is to provide an automatic rice transplanting and mulching device for paddy fields to solve the above-mentioned problems.

[0005] To achieve the above objectives, the present invention provides the following solution:

[0006] An automatic rice transplanting and mulching device for paddy fields includes a forward mechanism and an installation platform connected to the rear end of the forward mechanism in the direction of travel. The installation platform is arranged with a material roller and an automatic transplanting mechanism in sequence from front to back along the direction of movement. A film pressing and cutting mechanism is arranged between the material roller and the automatic transplanting mechanism, and the two sides of the mulch film are provided with toothed holes.

[0007] The film pressing and cutting mechanism comprises the following components arranged sequentially along the moving direction:

[0008] A tensioning mechanism is connected to the material roller, and the tensioning mechanism is used to tension the film coating.

[0009] A feed assembly is connected to the bottom of the mounting platform. The feed assembly engages with the edge of the coating and is also compatible with the coating drive.

[0010] A film pressing and cutting assembly is connected to the bottom of the mounting platform. The film pressing and cutting assembly is pressed onto the upper surface of the film. The film pressing and cutting assembly includes a vertically sliding cutter for cutting the film.

[0011] A drive unit is disposed on the mounting platform, and the drive unit is engaged with the cutter drive.

[0012] Optionally, it also includes a film-coated perforated roller, with one end of each end rotatably fitted with a hinge rod, the other end of which is hinged to a mounting vertical plate, the mounting vertical plate being fixed on the mounting platform, and one end of a telescopic rod three being hinged to the middle of the hinge rod, the other end of which is hinged to the side wall of the mounting vertical plate.

[0013] Optionally, the tensioning mechanism includes a tensioning roller, with a rotating shaft coaxially rotating at both ends of the tensioning roller. A slider is fixedly connected to the rotating shaft, and a sliding groove column slides vertically on the slider. The sliding groove column is fixed to the bottom of the mounting platform, and a spring is provided between the bottom of the slider and the sliding groove column. The spring is used to make the slider have an upward sliding tendency.

[0014] Optionally, the feed component includes:

[0015] The second rotating shaft has movable ends of the first telescopic rod that are rotatably fitted at both ends, and the fixed end of the first telescopic rod is fixed to the bottom of the installation platform;

[0016] Driven wheels are coaxially fixed to the outside of the second rotating shaft. There are two driven wheels, which are respectively located at both ends of the second rotating shaft. The driven wheels are used to contact the ground. A gear is coaxially rotatably mounted on the driven wheel. The gear has a number of teeth fixed at equal intervals around its circumference. The teeth are used to mesh with the tooth holes opened at the edge of the film. A clutch mechanism is provided between the second rotating shaft and the gear.

[0017] The second rotating shaft is hollow, one end of the second rotating shaft is connected to an intake solenoid valve, the other end of the second rotating shaft is connected to an exhaust solenoid valve, and the exhaust solenoid valve is connected to the pressure film and cutting assembly;

[0018] The intake solenoid valve is connected to an air pump, and the air pump is fixed on the mounting platform.

[0019] The clutch mechanism is driven by the air pump, and the clutch mechanism is used to control the driven wheel and the gear to rotate synchronously.

[0020] Optionally, the clutch mechanism includes a plurality of airbags, which are circumferentially and equally spaced on the outer side of the second rotating shaft, and the airbags are located between the gear and the second rotating shaft, and the inner cavity of the second rotating shaft is in communication with the airbags;

[0021] When the airbag inflates, it increases the friction between the second rotating shaft and the inner wall of the gear, causing the gear and the driven wheel to rotate synchronously.

[0022] Optionally, the film pressing and cutting assembly includes:

[0023] The pressure roller has movable ends of telescopic rods two fixedly connected to both ends, and the fixed ends of the telescopic rods two are fixedly connected to the mounting platform.

[0024] The pressure roller has the following openings:

[0025] The air passage has an intake valve connected to the exhaust solenoid valve at one end, and an outlet valve at the other end.

[0026] A sliding cavity is configured to communicate with the airway, and a sliding plate is provided in a sealed sliding fit within the sliding cavity;

[0027] A cutting blade sliding cavity, in which a cutting blade is slidably fitted, and the cutting blade is drivingly connected to the sliding plate;

[0028] The air pump serves as the drive unit. The air pump inflates the second rotating shaft through the air intake solenoid valve. After the second rotating shaft has sufficient air pressure, it exhausts air into the air passage through the exhaust solenoid valve and the air intake valve. After the air passage is inflated, it pushes the sliding plate to move, causing the cutter to extend.

[0029] Optionally, the sliding plate and the cutter are fixed together by a number of equally spaced connecting rods. The connecting rods pass through the inner wall between the sliding cavity and the cutting blade sliding cavity. A second spring is coaxially sleeved on the outside of the connecting rod. One end of the second spring is connected to the bottom of the sliding plate, and the other end of the second spring is connected to the inner wall of the sliding cavity.

[0030] Optionally, a hook tooth is fixedly connected to the tooth, and the hook tooth is located on the front side in the rotation direction of the gear.

[0031] Optionally, a front mudguard is provided on one side of the material roller, and the front mudguard is located at the front end near the moving direction of the forward mechanism.

[0032] Optionally, the automatic rice transplanting mechanism includes a reciprocating seedling loading tray and a transplanting claw arranged sequentially along the moving direction of the forward mechanism. The fixed end of the reciprocating seedling loading tray is fixed to the mounting platform, and the two ends of the transplanting claw are rotatably fitted with mounting beams. One end of the mounting beam is fixed to the mounting vertical plate.

[0033] Compared with the prior art, the present invention has the following advantages and technical effects:

[0034] In use, the film is wound around the feed roller. During production, the film has serrated edges. The film is then sequentially wound around the tensioning mechanism and feeding assembly, and laid under the pressing and cutting assembly. As the device moves forward via the forward mechanism, the pressing and cutting assembly presses the film onto the ground. Simultaneously, the device moves forward, pulling the film and causing the feed roller to rotate. The tensioning mechanism ensures the flatness of the film during laying, and an automatic rice seedling planting mechanism plants seedlings. After one row is planted, the drive unit drives the cutter to slide downwards and cut the film. This device, through mechanization, can automatically cut the film after one row of planting, achieving automated operation without manual assistance and thus improving the level of automation. Attached Figure Description

[0035] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the embodiments will be briefly described below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0036] Figure 1 This is a schematic diagram of the structure of the present invention;

[0037] Figure 2 This is a schematic diagram of the tensioning mechanism structure of the present invention;

[0038] Figure 3 This is a schematic diagram of the feed assembly structure of the present invention;

[0039] Figure 4 This is a left view of the driven wheel and gear structure of the present invention;

[0040] Figure 5 For the present invention Figure 3 Enlarged view of a portion of point A in the middle;

[0041] Figure 6 This is a schematic diagram of the pressing and cutting assembly structure of the present invention;

[0042] The components include: 1. Forward mechanism; 2. Mounting platform; 3. Front mudguard; 4. Material roller; 5. Tensioning mechanism; 6. Telescopic rod one; 7. Feeding assembly; 8. Telescopic rod two; 9. Film pressing and cutting assembly; 10. Film-coating perforating roller; 11. Hinge rod; 12. Telescopic rod three; 13. Mounting vertical plate; 14. Mounting crossbeam; 15. Rice transplanter claw; 16. Reciprocating seedling loading tray; 17. Air pump; 501. Slide column; 502. Tensioning roller; 503. Sliding block; 5 04. Shaft 1; 505. Spring 1; 701. Shaft 2; 702. Driven wheel; 703. Gear; 704. Tooth; 705. Airbag; 706. Intake solenoid valve; 707. Exhaust solenoid valve; 708. Hook; 901. Pressure roller; 902. Air passage; 903. Exhaust valve; 904. Intake valve; 905. Sliding chamber; 906. Sliding plate; 907. Connecting rod; 908. Spring 2; 909. Cutter sliding chamber; 910. Cutter. Detailed Implementation

[0043] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0044] To make the above-mentioned objects, features and advantages of the present invention more apparent and understandable, the present invention will be further described in detail below with reference to the accompanying drawings and specific embodiments.

[0045] Reference Figures 1 to 6 The present invention discloses an automatic rice transplanting and mulching device for paddy fields, including a forward mechanism 1 and an installation platform 2 connected to the rear end of the forward mechanism 1 in the direction of travel. The installation platform 2 is arranged with a material roller 4 and an automatic rice transplanting mechanism in sequence from front to back along the moving direction. A film pressing and cutting mechanism is arranged between the material roller 4 and the automatic rice transplanting mechanism, and the two sides of the mulch film are provided with toothed holes.

[0046] The film pressing and cutting mechanism includes the following components arranged sequentially along the moving direction:

[0047] Tensioning mechanism 5 is connected to material roller 4 and is used to tension the film coating.

[0048] The feed assembly 7 is connected to the bottom of the mounting platform 2. The feed assembly 7 engages with the edge of the coating and cooperates with the coating drive.

[0049] The film pressing and cutting assembly 9 is connected to the bottom of the mounting platform 2. The film pressing and cutting assembly 9 is pressed and set on the upper surface of the film. The film pressing and cutting assembly 9 includes a vertically sliding cutter 910, which is used to cut the film.

[0050] The drive unit is mounted on the mounting platform 2 and is in transmission cooperation with the cutter 910.

[0051] In use, the film is wound around the feed roller 4. During production, the film has serrated edges. The film is then sequentially wound around the tensioning mechanism 5, the feeding component 7, and laid under the pressing and cutting component 9. As the device moves forward via the forward mechanism 1, the pressing and cutting component 9 presses the film onto the ground. Simultaneously, the device moves forward, pulling the film and causing the feed roller 4 to rotate. The tensioning mechanism 5 ensures the flatness of the film during laying, and seedlings are simultaneously planted by the automatic rice transplanting mechanism. After one row is planted, the cutter 910 is driven downwards by the drive unit to cut the film. This device, through mechanization, can automatically cut the film after one row of planting, achieving automated operation without manual assistance and thus improving the degree of automation.

[0052] As an optional implementation, it also includes a film-coated perforated roller 10, with one end of a hinge rod 11 rotatably fitted at both ends. The other end of the hinge rod 11 is hinged to a mounting vertical plate 13, which is fixed on the mounting platform 2. One end of a telescopic rod 12 is hinged to the middle of the hinge rod 11, and the other end of the telescopic rod 12 is hinged to the side wall of the mounting vertical plate 13.

[0053] The film-covering perforation roller 10 is located between the film pressing and cutting assembly 9 and the automatic rice transplanting mechanism. Planting holes are pre-punched on the film by the matrix-arranged protrusions on the film-covering roller 10, so that the automatic rice transplanting mechanism can insert the seedlings into the holes.

[0054] As an optional implementation, the tensioning mechanism 5 includes a tensioning roller 502, with a rotating shaft 504 coaxially rotating at both ends of the tensioning roller 502. A slider 503 is fixedly connected to the rotating shaft 504, and a sliding groove post 501 slides vertically on the slider 503. The sliding groove post 501 is fixed to the bottom of the mounting platform 2. A spring 505 is provided between the bottom of the slider 503 and the sliding groove post 501. The spring 505 is used to make the slider 503 have an upward sliding tendency.

[0055] Spring 505 causes slider 503 to slide upward, which can tighten the film and ensure the flatness of the film.

[0056] As an optional implementation, the feed component 7 includes:

[0057] The rotating shaft 701 has movable ends of telescopic rod 6 at both ends, and the fixed ends of telescopic rod 6 are fixed to the bottom of the installation platform 2.

[0058] Driven wheel 702 is coaxially fixed to the outside of rotating shaft 701. There are two driven wheels 702, which are respectively located at both ends of rotating shaft 701. Driven wheel 702 is used to contact the ground. A gear 703 is coaxially rotatably mounted on driven wheel 702. The gear 703 has a number of teeth 704 fixed at equal intervals around its circumference. The teeth 704 are used to mesh with the tooth holes opened at the edge of the film. A clutch mechanism is provided between rotating shaft 701 and gear 703.

[0059] The second rotating shaft 701 is hollow. One end of the second rotating shaft 701 is connected to the intake solenoid valve 706, and the other end of the second rotating shaft 701 is connected to the exhaust solenoid valve 707. The exhaust solenoid valve 707 is connected to the pressure film and cutting assembly 9.

[0060] The intake solenoid valve 706 is connected to an air pump 17, which is fixed on the mounting platform 2.

[0061] The clutch mechanism is driven by the air pump 17 and is used to control the synchronous rotation of the driven wheel 702 and the gear 703.

[0062] Both the intake solenoid valve 706 and the exhaust solenoid valve 707 are fixed to the movable end side wall of the telescopic rod 6. The air ports of the intake solenoid valve 706 and the exhaust solenoid valve 707 are rotatably engaged with the rotating shaft 701 through sealed bearings.

[0063] The intake solenoid valve 706 is connected to the air pump 17 via a pipeline, and the exhaust solenoid valve 707 is also connected to the pressure diaphragm and cutting assembly 9 via a pipeline.

[0064] As an optional implementation, the clutch mechanism includes a plurality of airbags 705, which are circumferentially and equally spaced on the outside of the second rotating shaft 701, and the airbags 705 are located between the gear 703 and the second rotating shaft 701, and the inner cavity of the second rotating shaft 701 is in communication with the airbags 705.

[0065] When the airbag 705 inflates, it increases the friction between the rotating shaft 701 and the inner wall of the gear 703, causing the gear 703 and the driven wheel 702 to rotate synchronously.

[0066] In use, the air pump 17 introduces air into the rotating shaft 701 through the intake solenoid valve 706, which increases the air pressure inside the rotating shaft 701. This causes the air bag 705 to expand, increasing the friction between the rotating shaft 701 and the inner wall of the gear 703. As a result, the gear 703 and the driven wheel 702 rotate synchronously. When both the intake solenoid valve 706 and the exhaust solenoid valve 707 are closed, the gas cannot be discharged, ensuring that the gear 703 and the driven wheel 702 rotate synchronously.

[0067] Driven wheel 702 contacts the ground. When the forward mechanism 1 moves, driven wheel 702 rotates under the action of ground friction, driving gear 703 to feed the coating.

[0068] When cutting the film is required, the film does not need to be fed. By opening the exhaust solenoid valve 707, the air bag 705 automatically retracts, and the gear 703 and the driven wheel 702 rotate freely.

[0069] As an optional implementation, the molding and cutting assembly 9 includes:

[0070] The pressure roller 901 has movable ends of telescopic rod 2 8 fixedly connected to both ends, and the fixed ends of telescopic rod 2 8 are fixedly connected to the mounting platform 2.

[0071] The pressure roller 901 has the following openings:

[0072] The air passage 902 is connected at one end to the exhaust solenoid valve 707 via the intake valve 904, and the other end of the air passage 902 is connected to the exhaust valve 903.

[0073] A sliding cavity 905 is connected to an airway 902, and a sliding plate 906 is sealed and slidably fitted inside the sliding cavity 905.

[0074] A cutting blade sliding cavity 909 is provided, and a cutting blade 910 is slidably fitted inside the cutting blade sliding cavity 909. The cutting blade 910 is connected to the sliding plate 906 in a transmission manner.

[0075] Air pump 17 serves as the driving unit. Air pump 17 inflates the rotating shaft 701 through the air intake solenoid valve 706. After the rotating shaft 701 has sufficient air pressure, it exhausts air into the air passage 902 through the exhaust solenoid valve 707 and the air intake valve 904. After the air passage 902 is inflated, it pushes the sliding plate 906 to move, causing the cutter 910 to extend.

[0076] Air pump 17 inflates shaft 2 701 through intake solenoid valve 706. After shaft 2 701 has sufficient air pressure, when film cutting is required, exhaust solenoid valve 707 is opened, and the gas in shaft 2 701 automatically flows to intake valve 904 and enters air passage 902. At this time, exhaust valve 903 exhausts gas. The exhaust speed can be controlled by controlling the orifice of exhaust valve 903. When the exhaust speed of exhaust valve 903 is slow, the high-pressure air in shaft 2 701 is suddenly released by exhaust solenoid valve 707. Shaft 2 701 and air passage 902 will first balance the air pressure. At this time, the air pressure in air passage 902 increases. In order to balance the air pressure, air passage 902 is inflated and pushes sliding plate 906 to move, causing cutter 910 to extend and achieve the function of cutting film. When the air in air passage 902 is gradually discharged by exhaust valve 903, cutter 910 also retracts.

[0077] The pressure roller 901 is fixed to the telescopic rod 28, and the contact surface between the pressure roller 901 and the film is smoothly set. The film is pressed down by the pressure roller 901 to make it firmly connected to the ground surface.

[0078] As an optional implementation, the sliding plate 906 and the cutter 910 are fixed by a number of equally spaced connecting rods 907. The connecting rods 907 pass through the inner wall between the sliding cavity 905 and the cutter sliding cavity 909. A second spring 908 is coaxially sleeved on the outside of the connecting rod 907. One end of the second spring 908 is connected to the bottom of the sliding plate 906, and the other end of the second spring 908 is connected to the inner wall of the sliding cavity 905.

[0079] When the air pressure inside the air passage 902 increases, the second spring 908 is compressed. When the air pressure inside the air passage 902 decreases, it is insufficient to drive the second spring 908 to compress. At this time, the second spring 908 returns to its initial length and pushes the cutter 910 to reset.

[0080] As an optional implementation, a hook tooth 708 is fixedly connected to the tooth 704, and the hook tooth 708 is located on the front side in the rotation direction of the gear 703.

[0081] The 708 hook tooth design prevents it from detaching from the coating.

[0082] As an optional implementation, a front mudguard 3 is provided on one side of the material roller 4, and the front mudguard 3 is located at the front end near the moving direction of the forward mechanism 1.

[0083] As an optional implementation, the automatic rice transplanting mechanism includes a reciprocating seedling loading tray 16 and a transplanting claw 15 arranged sequentially along the moving direction of the forward mechanism 1. The fixed end of the reciprocating seedling loading tray 16 is fixedly connected to the mounting platform 2, and the two ends of the transplanting claw 15 are rotatably fitted with a mounting beam 14. One end of the mounting beam 14 is fixedly connected to the mounting vertical plate 13.

[0084] In the description of this invention, it should be understood that the terms "longitudinal", "lateral", "up", "down", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this invention, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this invention.

[0085] The embodiments described above are merely preferred embodiments of the present invention and are not intended to limit the scope of the present invention. Various modifications and improvements made by those skilled in the art to the technical solutions of the present invention without departing from the spirit of the present invention should fall within the protection scope defined by the claims of the present invention.

Claims

1. An automatic rice transplanting and mulching device for paddy fields, comprising a forward mechanism (1) and an installation platform (2) connected to the rear end of the forward mechanism (1) in the direction of travel, wherein the installation platform (2) is provided with a feed roller (4) and an automatic transplanting mechanism in sequence from front to back along the direction of travel, characterized in that, A film pressing and cutting mechanism is provided between the material roller (4) and the automatic rice transplanting mechanism, and the two sides of the film covering are provided with toothed holes; The film pressing and cutting mechanism comprises the following components arranged sequentially along the moving direction: The tensioning mechanism (5) is connected to the material roller (4) and is used to tension the film. A feeding assembly (7) is connected to the bottom of the mounting platform (2), the feeding assembly (7) engages with the edge of the film coating, and the feeding assembly (7) is in cooperation with the film coating drive. A film pressing and cutting assembly (9) is connected to the bottom of the mounting platform (2). The film pressing and cutting assembly (9) is pressed and set on the upper surface of the film. The film pressing and cutting assembly (9) includes a vertically sliding cutter (910) for cutting the film. A drive unit is disposed on the mounting platform (2), and the drive unit is in transmission cooperation with the cutter (910).

2. The automatic rice transplanting and mulching equipment for paddy fields according to claim 1, characterized in that, It also includes a film-coated perforated roller (10), with one end of a hinge rod (11) rotatably fitted at both ends. The other end of the hinge rod (11) is hinged to a mounting plate (13), which is fixed on the mounting platform (2). One end of a telescopic rod (12) is hinged to the middle of the hinge rod (11), and the other end of the telescopic rod (12) is hinged to the side wall of the mounting plate (13).

3. The automatic rice transplanting and mulching equipment for paddy fields according to claim 1, characterized in that, The tensioning mechanism (5) includes a tensioning roller (502), with a rotating shaft (504) coaxially rotating at both ends of the tensioning roller (502). A slider (503) is fixedly connected to the rotating shaft (504). A sliding groove column (501) slides vertically on the slider (503). The sliding groove column (501) is fixed to the bottom of the mounting platform (2). A spring (505) is provided between the bottom of the slider (503) and the sliding groove column (501). The spring (505) is used to make the slider (503) have an upward sliding tendency.

4. The automatic rice transplanting and mulching equipment for paddy fields according to claim 1, characterized in that, The feed assembly (7) includes: The second rotating shaft (701) has movable ends of the first telescopic rod (6) that are rotatably fitted at both ends. The fixed end of the first telescopic rod (6) is fixed to the bottom of the mounting platform (2). Driven wheel (702) is coaxially fixed to the outside of the second rotating shaft (701). There are two driven wheels (702) respectively located at both ends of the second rotating shaft (701). The driven wheel (702) is used to contact the ground. A gear (703) is coaxially rotatably mounted on the driven wheel (702). The gear (703) has a number of teeth (704) fixed at equal intervals around its circumference. The teeth (704) are used to mesh with the tooth holes opened at the edge of the film. A clutch mechanism is provided between the second rotating shaft (701) and the gear (703). The second rotating shaft (701) is hollow. One end of the second rotating shaft (701) is connected to the intake solenoid valve (706), and the other end of the second rotating shaft (701) is connected to the exhaust solenoid valve (707). The exhaust solenoid valve (707) is connected to the pressing and cutting assembly (9). The intake solenoid valve (706) is connected to an air pump (17), which is fixed on the mounting platform (2); The clutch mechanism is driven by the air pump (17), and the clutch mechanism is used to control the driven wheel (702) and the gear (703) to rotate synchronously.

5. The automatic rice transplanting and mulching equipment for paddy fields according to claim 4, characterized in that: The clutch mechanism includes a plurality of airbags (705), which are circumferentially and equally spaced on the outside of the second rotating shaft (701), and the airbags (705) are located between the gear (703) and the second rotating shaft (701), and the inner cavity of the second rotating shaft (701) is connected to the airbags (705); When the airbag (705) inflates, it increases the friction between the second rotating shaft (701) and the inner wall of the gear (703), causing the gear (703) and the driven wheel (702) to rotate synchronously.

6. The automatic rice transplanting and mulching equipment for paddy fields according to claim 4, characterized in that: The pressing and cutting assembly (9) includes: The pressure roller (901) has movable ends of telescopic rods (8) fixedly connected to both ends, and the fixed ends of the telescopic rods (8) are fixedly connected to the mounting platform (2). The pressure roller (901) has the following openings: The air passage (902) is connected at one end to the exhaust solenoid valve (707) via the intake valve (904), and the other end of the air passage (902) is connected to the exhaust valve (903); A sliding cavity (905) is connected to the airway (902), and a sliding plate (906) is provided in a sealed sliding fit inside the sliding cavity (905); A cutter sliding cavity (909) is provided, in which a cutter (910) is slidably fitted, and the cutter (910) is connected to the sliding plate (906) in a transmission manner; The air pump (17) serves as the drive unit. The air pump (17) inflates the rotating shaft (701) through the intake solenoid valve (706). After the rotating shaft (701) has sufficient air pressure, it exhausts air into the air passage (902) through the exhaust solenoid valve (707) and the intake valve (904). After the air passage (902) is inflated, it pushes the sliding plate (906) to move, causing the cutter (910) to extend.

7. An automatic rice transplanting and mulching device for paddy fields according to claim 6, characterized in that: The sliding plate (906) and the cutter (910) are fixed together by a number of equally spaced connecting rods (907). The connecting rods (907) pass through the inner wall between the sliding cavity (905) and the cutter sliding cavity (909). A second spring (908) is coaxially sleeved on the outside of the connecting rod (907). One end of the second spring (908) is connected to the bottom of the sliding plate (906), and the other end of the second spring (908) is connected to the inner wall of the sliding cavity (905).

8. An automatic rice transplanting and mulching device for paddy fields according to claim 4, characterized in that: A hook tooth (708) is fixedly connected to the tooth (704), and the hook tooth (708) is located on the front side of the rotation direction of the gear (703).

9. An automatic rice transplanting and mulching device for paddy fields according to claim 1, characterized in that: A front mudguard (3) is provided on one side of the material roller (4), and the front mudguard (3) is located at the front end near the moving direction of the forward mechanism (1).

10. An automatic rice transplanting and mulching device for paddy fields according to claim 2, characterized in that: The automatic rice transplanting mechanism includes a reciprocating seedling loading tray (16) and a transplanting claw (15) arranged sequentially along the moving direction of the forward mechanism (1). The fixed end of the reciprocating seedling loading tray (16) is fixed to the mounting platform (2). The two ends of the transplanting claw (15) are rotatably fitted with a mounting beam (14). One end of the mounting beam (14) is fixed to the mounting vertical plate (13).