Rice transplanter and film covering device thereof

Abstract

The utility model discloses a rice transplanter and a film covering device thereof, and belongs to the field of rice transplanters, the film covering device of the rice transplanter comprises a base plate used for being connected to a rice transplanter rack, and further comprises a supporting shaft, a cover plate, a fixing plate, a jacking shaft and a jacking piece; one side of the cover plate is hinged to the base plate, the cover plate is movably connected with a control part, the control part can fasten the cover plate and the base plate, and when the control part is separated from the base plate, the cover plate can rotate towards the side away from the supporting shaft, so that the top shaft is synchronously away from the supporting shaft; the other end of the supporting shaft is fixed to a jacking piece, part of the jacking piece penetrates through a fixing plate, the fixing plate is fixedly connected to the base plate, and a second bearing is arranged between the jacking piece and the fixing plate, so that the supporting shaft can rotate relative to the fixing plate through the second bearing; the supporting shaft is detachably connected with the jacking piece, so that the supporting shaft can slide relative to the jacking piece, and the relative distance between the supporting shaft and the jacking piece is changed. The problem of the installation precision of the supporting shaft can be effectively solved, and the mulching film roll is easy to disassemble and assemble.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of rice transplanter, more particularly, to a rice transplanter and a mulching device thereof. BACKGROUND

[0002] The rice transplanter is an agricultural machine for transplanting rice seedlings into a rice field. Some existing rice transplanters are provided with a mulching device to reduce water evaporation, inhibit weed growth, protect soil structure, improve soil nutrient utilization, reduce environmental pollution in agricultural production, promote the healthy growth of rice, and improve yield by covering the mulch during operation.

[0003] The existing mulching device has a mulch roll supporting shaft, bearings are arranged at both ends of the supporting shaft, and the bearings provide resistance when the supporting shaft rotates to tighten the output mulch. The mulch has ductility, and appropriate tension can also save mulch and lay a larger area by using ductility.

[0004] Specifically, since the supporting shaft often needs to add a mulch roll, the bearing at one end of the supporting shaft needs to be arranged on the top shaft, and the top shaft supports the supporting shaft to transmit the bearing resistance to the mulch. When the supporting shaft needs to be replaced or a mulch roll is added, the top shaft and the bearing thereon are separated, so that one end of the supporting shaft is in an open state, and the user inserts the mulch roll from the end.

[0005] Therefore, only when the supporting shaft is tightly pressed, the bearing can work effectively.

[0006] However, due to assembly precision problems, it is difficult to tightly press the supporting shaft of the roller drum by using only a simple top shaft, which will cause the supporting shaft to be loose when rotating, the bearing not to work, and the mulch to be wrinkled when laid on the field, affecting the transplanting effect (tilting, and the seedlings cannot pass through the mulch and be planted in the field).

[0007] For example, Chinese patent document (publication number: CN 116830948 A) provides a mulch tightness adjusting device of a rice transplanter, which is a kind of mulching device, including a mounting seat fixed on the rice transplanter, a film shaft (equivalent to the supporting shaft of the present application) rotatably arranged on the mounting seat, and a mulch wound on the film shaft. The bearing assembly is installed in the bearing seat of the device, the spring is sleeved on the rotating shaft and is pressed against the adjusting nut and the bearing assembly, respectively. The spring can provide pressure to the conical connecting part (equivalent to the top shaft of the present application) to overcome the assembly precision problem to press the film shaft and output the tight mulch.

[0008] Since the mulching device is close to the chassis of the transplanter, it often faces the interference of splashing mud and water. The mulching device provided by the above patent document can solve the problem of the cooperation between the supporting shaft and the bearing, but it is relatively complex, difficult to maintain and clean in a harsh working environment, and when the user needs to add or replace the mulch roll, sometimes it needs to be operated in the mud, and tools are needed to disassemble the parts on both sides of the supporting shaft. For example, when replacing the mulch roll in the above patent, the adjusting nut for compressing the spring needs to be disassembled first, which is very troublesome, and small parts are often lost during disassembly and assembly.

[0009] The related technology does not provide an effective solution to the above problems. SUMMARY

[0010] The present application provides a transplanter and a mulching device thereof to solve the problems of loose mulch output by the existing transplanter and low efficiency and difficulty in replacing the mulch.

[0011] Some embodiments of the present application provide a mulching device of a transplanter, comprising a base plate for connecting to a frame, further comprising a supporting shaft, a cover plate, a fixed plate, a top shaft and a tightening member; one end of the supporting shaft is stopped by the top shaft, part of the top shaft passes through the cover plate, and a first bearing is arranged between the top shaft and the cover plate, so that the supporting shaft can rotate relative to the cover plate through the first bearing;

[0012] One side of the cover plate is hinged to the base plate, and the cover plate is movably connected with a control member, the control member can fasten the cover plate and the base plate, when the control member is separated from the base plate, the cover plate can be turned away from the supporting shaft, so that the top shaft is synchronously away from the supporting shaft;

[0013] The other end of the supporting shaft is fixed to the tightening member, part of the tightening member passes through the fixed plate, the fixed plate is fixedly connected to the base plate, and a second bearing is arranged between the tightening member and the fixed plate, so that the supporting shaft can rotate relative to the fixed plate through the second bearing;

[0014] The supporting shaft and the tightening member are detachably connected, so that the supporting shaft can slide relative to the tightening member to change the relative distance between the supporting shaft and the tightening member.

[0015] Further, the top tight part is a rod, an axial surface of which forms a limiting groove, the support shaft forms a matching hole, the top tight part is inserted into the support shaft, so that the matching hole is opposite to the limiting groove; the matching hole is fixed in position opposite to the limiting groove by a plug shaft, the plug shaft is inserted into the matching hole and abuts against the bottom surface of the limiting groove; the length of the limiting groove along the axial direction of the support shaft is L1, the length of the matching hole along the axial direction of the support shaft is L2, and L1>L2.

[0016] Further, the length of the limiting groove along the axial direction of the support shaft is L1, the length of the matching hole along the axial direction of the support shaft is L2, and L1>3L2.

[0017] Further, the outer periphery of the top tight part is provided with an outwardly protruding clamping table, the end surface of the clamping table abuts against the second bearing, the top tight part is formed with a clamping groove on the side of the second bearing away from the clamping table, and a clamping ring is installed in the clamping groove to prevent the second bearing from moving axially.

[0018] Further, the inner wall of the matching hole is formed with an internal thread, and the outer wall of the plug shaft is formed with an external thread.

[0019] Further, the base plate comprises a first connecting plate and a second connecting plate, the cover plate is hingedly connected to the first connecting plate, and the fixed plate is fixedly connected to the second connecting plate.

[0020] Further, the operating part is configured in a rod shape, the middle part of the operating part is rotationally connected to the side edge of the cover plate, one end of the operating part is formed with a hook part, the side edge of the first connecting plate is formed with a notch, and the hook part can enter or leave the notch when the operating part rotates.

[0021] Further, the base plate further comprises a half-cylinder-shaped guard plate, the support shaft is located in the guard plate, and the two sides of the guard plate are connected to the first connecting plate and the second connecting plate respectively.

[0022] Further, the cover plate is connected with a cylinder-shaped first loading part, the fixed plate is connected with a cylinder-shaped second loading part, the first bearing is located in the first loading part and can rotate relative to the first loading part, and the second bearing is located in the second loading part and can rotate relative to the second loading part.

[0023] To solve the above problems, some embodiments of the present application also provide a transplanter, which comprises a transplanter mulching device of any of the above-mentioned schemes; the base plate is connected to a rack; the transplanter mulching device further comprises a film pressing roller; the film pressing roller is fixedly connected to the base plate, and the support shaft is used to output the geotextile film to the film pressing roller.

[0024] Compared with the prior art, the technical scheme provided by the present application has the following beneficial effects:

[0025] (1) Near the fixed plate, the user can change the relative position of the tightening member and the support shaft, effectively solving the problem of the installation accuracy of the support shaft, so that the support shaft can output a relatively tight mulch film. The tightening member is located at the end of the support shaft away from the cover plate, which further simplifies the structure of the cover plate and achieves lightweight. The user can easily adjust the operating member to rotate the cover plate, so that the jacking shaft on the cover plate directly separates from the support shaft, thereby quickly replacing the mulch film roll, and the operation is simple. Therefore, the components of the mulch film device of the rice transplanter are reasonably arranged, the overall structure is convenient to maintain, and the device is suitable for a working environment with more mud at the bottom of the rice transplanter.

[0026] (2) The tightening member is rod-shaped, and the shaft surface forms a limiting groove. The support shaft forms a matching hole, the tightening member is inserted into the support shaft, and the matching hole is opposite to the limiting groove. The matching hole is fixed in position by the opposite position of the shaft and the limiting groove. The shaft is inserted into the matching hole and abuts against the bottom surface of the limiting groove. The length of the limiting groove along the axial direction of the support shaft is L1, the length of the matching hole along the axial direction of the support shaft is L2, and L1>L2. The length difference between L1 and L2 provides adjustment space for the position between the support shaft and the tightening member. Compared with the spring tightening scheme, the stability is higher, which is conducive to the balance of the overall output of the mulch film, avoids the situation that the mulch film floats on one side, and is easier to clean when facing mud splashing interference, and has a long service life.

[0027] (3) The inner wall of the matching hole forms an internal thread, and the outer wall of the shaft forms an external thread. The shaft is screwed into the matching hole, so that the shaft tightly abuts against the limiting groove. At the same time, if the support shaft and the tightening member slip after long-term use, the shaft can be removed from the matching hole, and the relative position of the support shaft and the tightening member can be repositioned, so that the support shaft is reconnected with the bearing. BRIEF DESCRIPTION OF DRAWINGS

[0028] The accompanying drawings, which form a part of this application, are included to provide a further understanding of the application and are incorporated in and constitute a part of this application. The drawings illustrate embodiments of the present application and, together with their description, serve to explain the application. In the drawings:

[0029] Figure 1 It is a structural schematic diagram of a mulch film device of a rice transplanter according to some embodiments of the present application;

[0030] Figure 2 It is an exploded structural schematic diagram of a mulch film device of a rice transplanter according to some embodiments of the present application;

[0031] Figure 3 It is Figure 2An enlarged structural schematic view of the rice transplanter mulching device shown in part A of the exploded structure;

[0032] Figure 4 A structural schematic view of the top shaft of the rice transplanter mulching device according to some embodiments of the present application;

[0033] Figure 5 A partial structural schematic view of the rice transplanter mulching device according to some embodiments of the present application in the open state of the cover plate;

[0034] Figure 6 A structural schematic view of the rice transplanter mulching device according to some embodiments of the present application in the open state of the cover plate;

[0035] Figure 7 A structural schematic view of the rice transplanter mulching device according to some embodiments of the present application; Figure 2 An enlarged structural schematic view of the rice transplanter mulching device shown in part B of the exploded structure;

[0036] Figure 8 A partial structural schematic view of the rice transplanter mulching device according to some embodiments of the present application; Figure 7

[0037] A structural schematic view of the rice transplanter mulching device according to some embodiments of the present application; Figure 9

[0038] A partial structural schematic view of the rice transplanter mulching device according to some embodiments of the present application in the open state of the cover plate; Figure 10

[0039] A structural schematic view of the rice transplanter mulching device according to some embodiments of the present application; Figure 11 Label Explanation:

[0040] 100, base plate; 110, first connecting plate; 111, notch; 120, second connecting plate; 130, guard plate;

[0041] 200, support shaft; 210, mating hole; 211, insertion shaft;

[0042] 300, top shaft; 310, rod portion; 320, tapered portion;

[0043] 400, cover plate; 410, first bearing; 420, operating member; 421, hook portion; 430, first loading portion; 440, flange;

[0044] 500, top tightening member; 510, limiting groove; 511, insertion shaft; 520, clamping platform; 530, clamping groove; 540, clamping ring;

[0045] 600, fixed plate; 610, second bearing; 620, second loading portion;

[0046] ​

[0047] 700, a platen roller. DETAILED DESCRIPTION

[0048] In order to make the personnel in the technical field better understand the scheme of the present application, the technical scheme in the embodiments of the present application will be clearly and completely described below in combination with the drawings in the embodiments of the present application. Obviously, the described embodiments are only a part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative labor should belong to the protection scope of the present application.

[0049] It should be noted that the terms "first", "second", and the like in the specification and claims of the present application and the above-described drawings are used to distinguish similar objects, and do not necessarily have to be used to describe a specific order or sequence. It should be understood that the data thus used can be interchanged under appropriate circumstances, so as to describe the embodiments of the present application herein.

[0050] In the present application, the terms "upper", "lower", "left", "right", "front", "back", "top", "bottom", "inner", "outer", "middle", "vertical", "horizontal", "lateral", "longitudinal", and the like indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings. These terms are mainly used to better describe the present application and its embodiments, and are not used to limit the indicated devices, elements or components to have a specific orientation, or to be constructed and operated in a specific orientation. Moreover, in addition to indicating the orientation or positional relationship, the above-mentioned terms can also be used to indicate other meanings, for example, the term "upper" can also be used to indicate a certain attachment relationship or connection relationship in some cases. For those skilled in the art, the specific meanings of these terms in the present application can be understood according to the specific circumstances.

[0051] As shown in Figure 1 The present application provides a rice transplanter mulching device for covering mulch film to a field, which comprises a base plate 100 for connecting to a frame, wherein the frame can be part of a planting part of a rice transplanter, and the base plate 100 can be composed of several separate components.

[0052] As shown in Figure 1 , Figure 2 The rice transplanter mulching device further comprises a support shaft 200, a top shaft 300, a cover plate 400, a top tightening member 500, and a fixing plate 600. The support shaft 200 is used to mount a mulch film roll. When the mulch film roll is used up, the user can dismount the mulch film roll from the support shaft 200 to replenish a new mulch film roll.

[0053] As an alternative, the support shaft 200 can be connected to other mechanical components for film unwinding; as another alternative, the support shaft 200 can not be connected to other mechanical components, and the user can pull the film out before use, and then adhere the film to the field, and then use the friction of the field surface and the water tension to unwind the film.

[0054] As shown in Figure 2 , Figure 3 , one end of the support shaft 200 is stopped by the top shaft 300, part of the top shaft 300 passes through the cover plate 400, and a first bearing 410 is arranged between the top shaft 300 and the cover plate 400, so that the support shaft 200 can rotate relative to the cover plate 400 through the first bearing 410. Specifically, as shown in Figure 4 , the top shaft 300 includes a rod portion 310 and a tapered portion 320 connected to each other, the rod portion 310 of the top shaft 300 passes through the cover plate 400, the tapered portion 320 is located at the end of the rod portion 310, the rod portion 310 is sleeved with the first bearing 410, and the tapered portion 320 is used to stop the support shaft 200. Part of the tapered portion 320 can be inserted into the inside of the support shaft 200.

[0055] As shown in Figure 5 , Figure 6 , one side of the cover plate 400 is hinged to the base plate 100, and the cover plate 400 movably connects a control member 420, and the control member 420 can fasten the cover plate 400 and the base plate 100. When the control member 420 is separated from the base plate 100, the cover plate 400 can be turned away from the side of the support shaft 200, so that the top shaft 300 is synchronously away from the support shaft 200, and one end of the support shaft 200 is open, and the user can disassemble or install the film roll from the end.

[0056] As shown in Figure 2 , Figure 7 , the other end of the support shaft 200 is fixed to the top tightener 500, part of the top tightener 500 passes through the fixed plate 600, the fixed plate 600 is fixedly connected to the base plate 100, and a second bearing 610 is arranged between the top tightener 500 and the fixed plate 600, so that the support shaft 200 can rotate relative to the fixed plate 600 through the second bearing 610.

[0057] As shown in Figure 7 , the support shaft 200 and the top tightener 500 are detachably connected, so that the support shaft 200 can slide relative to the top tightener 500 to change the relative distance between the support shaft 200 and the top tightener 500, so that both ends of the support shaft 200 are firmly limited by the cover plate 400 and the support plate, and the support shaft 200 is tightened, and the support shaft 200 has large resistance when rotating under the action of the bearing, so as to tension the film.

[0058] In this way, near the fixed plate 600, the user can change the relative position of the tightening member 500 and the support shaft 200 to effectively solve the installation accuracy problem of the support shaft 200, so that the support shaft 200 can output a relatively tight mulch film. Moreover, the tightening member 500 is located at the end of the support shaft 200 away from the cover plate 400, so that the structure of the cover plate 400 is further simplified, and the weight is further reduced. The user can easily adjust the operating member 420 to rotate the cover plate 400, so that the top shaft 300 on the cover plate 400 directly separates from the support shaft 200, thereby quickly replacing the mulch film roll, and the operation is simple. Therefore, the components of the mulch film device of the rice transplanter are reasonably arranged, the overall structure is convenient to maintain, and the device is suitable for a more harsh working environment with more mud at the bottom of the rice transplanter.

[0059] As shown in Figure 2 , the first bearing 410 and the second bearing 610 can be combined by a plurality of bearings, respectively, to increase the stress area of the top shaft 300 or the tightening member 500, and further improve the stability of the film output.

[0060] As a specific embodiment, as shown in Figure 8 , the tightening member 500 is a rod, and the shaft surface forms a limiting groove 510. The support shaft 200 forms a matching hole 210, and the tightening member 500 is inserted into the support shaft 200, so that the matching hole 210 is opposite to the limiting groove 510. The matching hole 210 is fixed in position by the insertion shaft 211 opposite to the limiting groove. The insertion shaft 211 is inserted into the matching hole 210 and abuts against the bottom surface of the limiting groove 510. The length of the limiting groove 510 along the axial direction of the support shaft 200 is L1, the length of the matching hole 210 along the axial direction of the support shaft 200 is L2, and L1>L2. The length difference between L1 and L2 can provide an adjustment space between the support shaft 200 and the tightening member 500.

[0061] The above scheme is especially higher in stability than the spring tightening scheme, is beneficial to the balance of the overall mulch film output, avoids the situation that the mulch film floats on one side, is easier to clean when facing mud splashing interference, and has a long service life.

[0062] More specifically, as shown in Figure 8 , the length of the limiting groove 510 along the axial direction of the support shaft 200 is L1, the length of the matching hole 210 along the axial direction of the support shaft 200 is L2, and L1>3L2. The adjustment space is further increased to adapt to more rice transplanter models.

[0063] Specifically, as shown in Figure 8As shown, the outer periphery of the top tight member 500 is provided with an outwardly protruding clamping table 520, the end face of the clamping table 520 abuts against the second bearing 610, the top tight member 500 is formed with a clamping groove 530 on the side of the second bearing 610 away from the clamping table 520, a clamping ring 540 is installed in the clamping groove 530, and the clamping ring 540 cooperates with the clamping table 520 to prevent the second bearing 610 from axially moving.

[0064] Further, similar clamping table or clamping groove structures can also be provided in the cover plate 400 and the fixing plate 600 to further abut against the first bearing 410 or the second bearing 610, which will not be described herein again.

[0065] As an alternative, as shown in Figure 9 As shown, the inner wall of the matching hole 210 is formed with an internal thread, and the outer wall of the insertion shaft 211 is formed with an external thread, the insertion shaft 211 is threadedly connected with the matching hole 210, so that the insertion shaft 211 tightly abuts against the limiting groove 510, and meanwhile, if the support shaft 200 and the top tight member 500 slip after long-time use, the insertion shaft 211 can be disassembled from the matching hole 210 to reposition the relative positions of the support shaft 200 and the top tight member 500, so that the support shaft 200 is re-coupled with the bearing.

[0066] The embodiment also provides a detailed scheme of the base plate 100, which comprises a first connecting plate 110 and a second connecting plate 120, the cover plate 400 is hingedly connected with the first connecting plate 110, and the fixing plate 600 is fixedly connected with the second connecting plate 120. The fixing plate 600 and the second connecting plate 120 can also be directly integrally formed, and the fixing plate 600 is regarded as the second connecting plate 120.

[0067] Preferably, as shown in Figure 10 As shown, the operating member 420 is configured in a rod shape, the middle part of the operating member 420 is rotationally connected to the side edge of the cover plate 400, one end of the operating member 420 is formed with a hook portion 421, the side edge of the first connecting plate 110 is formed with a notch 111, and the hook portion 421 can enter or leave the notch 111 when the operating member 420 rotates. When the user opens the side cover, the operating member 420 only needs to be rotated, without the need to disassemble screws and other parts, thereby greatly improving the operation efficiency.

[0068] Specifically, the rod-shaped operating member 420 can be assembled by several rod members, or the entire operating member 420 can be integrally formed.

[0069] Further, as shown in Figure 9As shown, the substrate 100 also includes a semi-cylindrical protective plate 130, and the support shaft 200 is located inside the protective plate 130. The protective plate 130 can provide a certain degree of protection for the support shaft 200 and the mulch roll on the support shaft 200. The two sides of the protective plate 130 are respectively connected to the first connecting plate 110 and the second connecting plate 120. The cover plate 400 and the fixing plate 600 can close at least a portion of the two end faces of the protective plate 130.

[0070] Preferred, refer to Figure 3 , 7 As shown, the cover plate 400 is connected to a cylindrical first loading part 430, and the fixing plate 600 is connected to a cylindrical second loading part 620. A first bearing 410 is located within the first loading part 430 and can rotate relative to it, while a second bearing 610 is located within the second loading part 620 and can rotate relative to it. The cylindrical first loading part 430 and second loading part 620 can be adapted to fit the shapes of the first bearing 410 and the second bearing 610, ensuring that the cover plate 400 and other parts of the fixing plate 600 remain thin, thus maintaining a lightweight design.

[0071] Optionally, only the cover plate 400 can be connected to the cylindrical first loading part 430, and the fixing plate 600 is not specifically restricted, so that the user can easily rotate the cover plate 400.

[0072] Specifically, such as Figure 3 As shown, one side of the cover plate 400 is folded to form a flange 440, and the first loading part 430 is located on the flange 440, so that the cover plate 400 provides a stable support for the first loading part 430.

[0073] As a specific solution, this embodiment also provides a rice transplanter, including the rice transplanter film covering device described above. The base plate 100 is connected to the frame, and the rice transplanter film covering device further includes a film pressing roller 700, which is connected to the base plate 100. The support shaft 200 is used to output mulch film to the film pressing roller 700.

[0074] In this application, the terms "installation," "setup," "equipped with," "connection," "linking," and "socketing" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral structure; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium, or an internal connection between two devices, components, or parts. Those skilled in the art can understand the specific meaning of the above terms in this application based on the specific circumstances.

[0075] The above merely provides preferred embodiments of the present application, and is not used to limit the present application. For those skilled in the art, the present application can have various modifications and changes. Any modifications, equivalent replacements, improvements, etc. made within the principles and technical scope of the present application shall fall into the scope of the present application.

Claims

1. A film mulching device for a rice transplanter, comprising a base plate for attachment to a frame of a rice transplanter, characterized in that, Also include: Supporting shaft, cover plate, fixed plate, top shaft and top tight piece; One end of the supporting shaft is stopped by the top shaft, part of the top shaft passes through the cover plate, and a first bearing is arranged between the top shaft and the cover plate, so that the supporting shaft can rotate relative to the cover plate through the first bearing; One side of the cover plate is hinged to the base plate, the cover plate is movably connected with a manipulating piece, the manipulating piece can fasten the cover plate and the base plate, when the manipulating piece is separated from the base plate, the cover plate can rotate away from the side of the supporting shaft, so that the top shaft is away from the supporting shaft synchronously; The other end of the supporting shaft is fixed to the top tight piece, part of the top tight piece passes through the fixed plate, the fixed plate is fixedly connected to the base plate, and a second bearing is arranged between the top tight piece and the fixed plate, so that the supporting shaft can rotate relative to the fixed plate through the second bearing; The supporting shaft and the top tight piece are detachably connected, so that the supporting shaft can slide relative to the top tight piece to change the relative distance between the supporting shaft and the top tight piece.

2. The film mulching device of the rice transplanter according to claim 1, wherein: The top tight piece is rod-shaped, and an axial surface thereof forms a limiting groove, the supporting shaft forms a matching hole, the top tight piece is inserted into the supporting shaft, so that the matching hole is opposite to the limiting groove; the matching hole is fixed in position opposite to the limiting groove through a plug shaft, the plug shaft is inserted into the matching hole and stops against the bottom surface of the limiting groove; the limiting groove has a length L1 along the axial direction of the supporting shaft, and the matching hole has a length L2 along the axial direction of the supporting shaft, and L1>L2.

3. The film mulching device of the rice transplanter according to claim 2, wherein: The limiting groove has a length L1 along the axial direction of the supporting shaft, and the matching hole has a length L2 along the axial direction of the supporting shaft, and L1>3L2.

4. The film mulching device of the rice transplanter according to claim 2, wherein: An outer periphery of the top tight piece is provided with a clamping post protruding outward, an end surface of the clamping post abuts against the second bearing, the top tight piece forms a clamping groove on a side of the second bearing away from the clamping post, and a clamping ring is installed in the clamping groove to prevent the second bearing from moving axially.

5. The film mulching device of the rice transplanter according to claim 2, wherein: An inner wall of the matching hole forms an internal thread, and an outer wall of the plug shaft forms an external thread.

6. The film mulching device of the rice transplanter according to claim 1, wherein: The base plate comprises a first connecting plate and a second connecting plate, the cover plate is hingedly connected to the first connecting plate, and the fixed plate is fixedly connected to the second connecting plate.

7. The film mulching device of the rice transplanter according to claim 6, wherein: The manipulating piece is rod-shaped, a middle part of the manipulating piece is rotatably connected to a side edge of the cover plate, one end of the manipulating piece forms a hook part, a side edge of the first connecting plate forms a gap, and the hook part can enter or exit the gap when the manipulating piece rotates.

8. The rice transplanter mulching device according to claim 6, characterized in that: The base plate further comprises a half-cylinder type guard plate, the support shaft is located in the guard plate, and two sides of the guard plate are connected with the first connecting plate and the second connecting plate respectively.

9. The rice transplanter mulching device according to any one of claims 1 to 8, characterized in that: The cover plate is connected with a cylinder type first loading part, the fixed plate is connected with a cylinder type second loading part, the first bearing is located in the first loading part and can rotate relative to the first loading part, and the second bearing is located in the second loading part and can rotate relative to the second loading part.

10. A transplanter characterized by comprising: The rice transplanter mulching device comprises the rice transplanter mulching device according to any one of claims 1 to 9; and the base plate is connected to a frame. The rice transplanter mulching device further comprises a film pressing roller; the film pressing roller is connected with the base plate, and the support shaft is used for outputting the mulching film to the film pressing roller.

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