Mulching film laying device based on agricultural planting

Abstract

The utility model relates to the technical field of mulching film laying, in particular to a mulching film laying device based on agricultural planting, which comprises an adjustable connecting and supporting structure, two supporting main frames, adjustable mulching film supporting rods, an adjustable flattening round roller and an edge pressing and soil burying structure. The adjustable connection supporting structure, the two supporting main frames, the adjustable mulching film supporting rod, the adjustable flattening round roller and the edge pressing soil burying structure are all installed on the two supporting main frames. According to the utility model, the transverse size of the supporting main frame can be adjusted in the later period through the mutual cooperation among the adjustable connecting supporting structure, the two supporting main frames, the adjustable mulching film supporting rod, the adjustable paving round roller and the edge pressing soil burying structure; therefore, one laying device can be suitable for laying multiple mulching films with different transverse sizes, laying devices with different specifications do not need to be replaced when the mulching films with different transverse sizes are laid within a certain range, and then the requirements of people can be better met.

Description

Technical Field

[0001] This utility model relates to an agricultural mulch film laying device, and more particularly to an agricultural mulch film laying device, belonging to the field of mulch film laying technology. Background Technology

[0002] Agricultural mulch film laying devices are mechanical equipment used to lay mulch film in farmland. They can significantly improve the efficiency and quality of mulch film laying while reducing the intensity of manual labor. Mulch film laying devices are indispensable equipment in modern agriculture. By improving the efficiency and effectiveness of mulch film laying, they provide a good growing environment for crops, thereby increasing crop yield and quality.

[0003] However, the lateral dimensions of the main support frame of existing agricultural mulch film laying devices are all fixed and cannot be changed later. This means that a laying device can only lay mulch film with the same lateral dimensions as its main support frame. Consequently, when laying mulch film with different lateral dimensions within a certain range, it is necessary to change to different specifications of laying devices, which cannot better meet people's needs.

[0004] Therefore, there is an urgent need to improve the agricultural film laying device to solve the above-mentioned problems. Summary of the Invention

[0005] The purpose of this invention is to provide an agricultural mulch film laying device. This device, through the cooperation of an adjustable connecting support structure, two main support frames, an adjustable mulch film support rod, an adjustable flattening roller, and an edge pressing and burying structure, allows the lateral dimensions of the main support frame to be adjusted laterally. This enables a laying device to adapt to laying mulch films with various lateral dimensions, thus eliminating the need to change to different specifications when laying mulch films with different lateral dimensions within a certain range, thereby better meeting people's needs.

[0006] To achieve the above objectives, the main technical solutions adopted by this utility model include:

[0007] An adjustable connecting support structure is fixedly installed between two main support frames, and the adjustable connecting support structure is used to extend and retract to adjust the distance between the two main support frames;

[0008] An adjustable mulch film support rod is fixedly installed on the top of the two main support frames and is used to support the mulch film roll.

[0009] An adjustable leveling roller is telescopically mounted on the two main support frames and located below the adjustable mulch film support rod. The adjustable leveling roller is used to roll and level the mulch film laid on the field.

[0010] An edge-pressing and soil-burying structure is installed on the two main support frames and located behind the adjustable leveling roller. The edge-pressing and soil-burying structure is used to press down the edge of the mulch film on the field and bury the edge of the mulch film with soil.

[0011] Preferably, the adjustable connection support structure includes a telescopic subplate disposed at the bottom of the inner side of the main support frame, a support mother plate sleeve sleeved on the two telescopic subplates, and telescopic adjustment support rods symmetrically installed between the top inner sides of the two main support frames. The support mother plate sleeve has a plurality of first fixing slots through the two telescopic subplates, and fixing bolts are screwed into the plurality of first fixing slots.

[0012] Preferably, the telescopic adjustment support rod includes a support sub-rod installed on the top inner side of the main support frame, a support rod sleeve sleeved on the two support sub-rods, and a plurality of second fixing slots through the two support sub-rods in the support rod sleeve. Fixing bolts are screwed into the plurality of second fixing slots. The support sub-rods are installed on the main support frame by bolts. Connecting fixing rods are symmetrically arranged between the support plate sleeve and the support rod sleeve above it. The distance between the two first fixing slots is the same as the distance between the two second fixing slots.

[0013] Preferably, the adjustable mulch film support rod includes a first mounting base, a telescopic main rod hinged to the first mounting base, a telescopic secondary rod slidably mounted in the telescopic main rod, a fixing head disposed at the end of the telescopic secondary rod, and a second mounting base mounted at the end of the fixing head. The first mounting base and the second mounting base are respectively mounted on the top of the two main support frames by fixing bolts.

[0014] Preferably, the adjustable leveling roller includes an adjustable cylindrical roller, a support rod symmetrically rotated on the adjustable cylindrical roller, and a limiting sleeve adapted to the support rod and disposed on the outside of the main support frame. The support rod is pressed and limited in the limiting sleeve by fixing bolts.

[0015] Preferably, the adjustable cylindrical roller includes a first cylindrical roller, a second cylindrical roller rotatably mounted in the first cylindrical roller, and a third cylindrical roller rotatably mounted in the second cylindrical roller, wherein the second cylindrical roller has a plurality of identical cylindrical rollers that are rotatably connected end to end.

[0016] Preferably, the edge pressing and burying structure includes a mulch film edge pressing assembly disposed on the inner side of the rear end of the main support frame and a burying and sealing assembly installed on the rear end of the main support frame. The mulch film edge pressing assembly includes a sliding rod, a pressing wheel rotatably disposed at the end of the sliding rod, and a sliding limiting sleeve disposed on the inner side of the main support frame. The sliding limiting sleeve is pressed and fixed in the sliding limiting sleeve by a fixing bolt.

[0017] Preferably, the soil covering assembly includes a support sleeve disposed at the rear end of the main support frame, a support shaft slidably mounted in the support sleeve, a slider slidably mounted at the end of the support shaft, and a soil-dispensing disc rotatably mounted at the end of the slider. The support shaft is fixed in the support sleeve by a fixing bolt, and the slider is fixed in the end of the support shaft by a fixing bolt. The main support frame is symmetrically mounted with movable wheels at its outer bottom.

[0018] This utility model has at least the following beneficial effects:

[0019] 1. This utility model allows for the adjustment of the lateral dimensions of the main support frame through the interplay of an adjustable connecting support structure, two main support frames, an adjustable mulch film support rod, an adjustable leveling roller, and an edge pressing and burying structure. This enables a single laying device to adapt to laying mulch films with various lateral dimensions, thus eliminating the need to change to different specifications of laying devices when laying mulch films with different lateral dimensions within a certain range, thereby better meeting people's needs. Attached Figure Description

[0020] The accompanying drawings, which are included to provide a further understanding of this application and form part of this application, illustrate exemplary embodiments of this application and are used to explain this application, but do not constitute an undue limitation of this application. In the drawings:

[0021] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0022] Figure 2 This is a schematic diagram of the adjustable cylindrical roller structure of this utility model;

[0023] Figure 3 This is a schematic diagram of the edge pressing component of the mulch film according to this utility model;

[0024] Figure 4 This is a schematic diagram of the soil-burying cover assembly of this utility model;

[0025] Figure 5 This is a diagram of the adjustable mulch film support rod of this utility model.

[0026] In the diagram, 1. Adjustable connecting support structure; 2. Supporting main frame; 3. Adjustable mulch film support rod; 4. Adjustable leveling roller; 5. Edge pressing and burying structure; 6. Telescopic sub-plate; 7. Support mother plate sleeve; 8. Telescopic adjustment support rod; 9. First fixing slot; 10. Support sub-rod; 11. Support rod mother sleeve; 12. Second fixing slot; 13. First mounting base; 14. Telescopic mother rod; 15. Telescopic sub-rod; 16. Fixing head; 17. Second... 18. Mounting base; 19. Adjustable cylindrical roller; 20. Support rod; 21. Limiting sleeve; 22. Support sleeve; 23. First cylindrical roller; 24. Second cylindrical roller; 25. Third cylindrical roller; 26. Cylindrical roller; 27. Mulch film edge pressing assembly; 28. Soil covering assembly; 29. ​​Sliding rod; 30. Pressing roller; 31. Sliding limiting sleeve; 32. Support shaft rod; 33. Sliding block; 34. Soil-dispensing disc; 35. Moving wheel; 36. Connecting fixing rod. Detailed Implementation

[0027] The following will describe in detail the implementation of this application with reference to the accompanying drawings and embodiments, so that the implementation process of how this application uses technical means to solve technical problems and achieve technical effects can be fully understood and implemented accordingly.

[0028] like Figures 1-5 As shown, the agricultural film laying device provided in this embodiment includes:

[0029] An adjustable connecting support structure 1 is fixedly installed between two main support frames 2. The adjustable connecting support structure 1 is used to adjust the distance between the two main support frames 2 in a telescopic manner.

[0030] Adjustable mulch film support rod 3 is fixedly installed at the top of the two main support frames 2. The adjustable mulch film support rod 3 is used to support the mulch film roll.

[0031] Adjustable flattening roller 4 is telescopically installed on two main support frames 2 and located below the adjustable mulch film support rod 3. Adjustable flattening roller 4 is used to roll and flatten the mulch film laid on the field.

[0032] Edge pressing and burying structure 5 is installed on two supporting main frame frames 2 and located behind the adjustable leveling roller 4. Edge pressing and burying structure 5 is used to press down the edge of the mulch film on the field and bury the edge of the mulch film with soil.

[0033] The adjustable connecting support structure 1 facilitates the telescopic and adjustable fixed connection of the two main support frames 2 together. The two main support frames 2 facilitate the fixed support of the adjustable mulch film support rod 3, the adjustable flattening roller 4, and the edge pressing and burying structure 5.

[0034] The adjustable connecting support structure 1, two main support frames 2, adjustable mulch film support rods 3, adjustable flattening rollers 4, and edge pressing and burying structure 5 work together to allow the lateral dimensions of the main support frames to be adjusted laterally. This enables a single laying device to adapt to laying mulch films with various lateral dimensions, thus eliminating the need to change to different specifications when laying mulch films with different lateral dimensions within a certain range, thereby better meeting people's needs.

[0035] Furthermore, such as Figure 2 , Figure 3 as well as Figure 4 As shown, the adjustable connecting support structure 1 includes a telescopic sub-plate 6 disposed at the bottom inner side of the main support frame 2, a support mother plate sleeve 7 sleeved on the two telescopic sub-plates 6, and telescopic adjustment support rods 8 symmetrically installed between the top inner sides of the two main support frames 2. The support mother plate sleeve 7 has several first fixing slots 9 through the two telescopic sub-plates 6, and fixing bolts are screwed into the several first fixing slots 9. The two telescopic sub-plates 6 and the support mother plate sleeve 7 cooperate with each other to allow the two telescopic sub-plates 6 to slide within the support mother plate sleeve 7, thereby realizing the adjustable and fixed characteristics between the bottom inner sides of the two main support frames 2. The two adjustment support rods 8 facilitate the adjustable and fixed characteristics between the top inner sides of the two main support frames 2. The several first fixing slots 9 and the fixing bolts cooperate with each other to allow the two telescopic sub-plates 6 to be fixed within the support mother plate sleeve 7.

[0036] Furthermore, such as Figure 2 As shown, the telescopic adjustment support rod 8 includes a support sub-rod 10 installed on the top inner side of the support main frame 2, a support rod sleeve 11 sleeved on the two support sub-rods 10, and several second fixing slots 12 opened on the support rod sleeve 11 and passing through the two support sub-rods 10. Fixing bolts are screwed into the several second fixing slots 12. The support sub-rods 10 are installed on the support main frame 2 by bolts. Connecting fixing rods 35 are symmetrically arranged between the support plate sleeve 7 and the support rod sleeve 11 above it. The distance between the two first fixing slots 9 is the same as the distance between the two second fixing slots 12. The two support sub-rods 10 and the support rod sleeve 11 cooperate with each other to realize the adjustable length of the telescopic adjustment support rod 8, thereby adapting to different distances between the top inner sides of the two support main frame 2. The several second fixing slots 12 and the fixing bolts cooperate with each other to realize that the two support sub-rods 10 can be limited and fixed in the support rod sleeve 11. The two connecting fixing rods 35 facilitate the fixed installation of the device on the fixed connection suspension of the tractor.

[0037] Furthermore, such as Figure 5As shown, the adjustable mulch film support rod 3 includes a first mounting base 13, a telescopic main rod 14 hinged to the first mounting base 13, a telescopic secondary rod 15 slidably mounted in the telescopic main rod 14, a fixing head 16 located at the end of the telescopic secondary rod 15, and a second mounting base 17 installed at the end of the fixing head 16. The first mounting base 13 and the second mounting base 17 are respectively installed on the top of the two main support frames 2 by fixing bolts. The first mounting base 13 facilitates fixing the end of the telescopic main rod 14 to the top of one of the main support frames 2, and at the same time provides rotational support for the telescopic main rod 14. The telescopic main rod 14 and the telescopic secondary rod 15 cooperate with each other to facilitate the telescopicity of the adjustable mulch film support rod 3. The fixing head 16 facilitates fixing the end of the telescopic secondary rod 15 to the second mounting base 17, and the second mounting base 17 facilitates fixing the telescopic secondary rod 15 to the top of the other main support frame 2.

[0038] Furthermore, such as Figure 2 As shown, the adjustable leveling roller 4 includes an adjustable cylindrical roller 18, a support rod 19 symmetrically rotated and mounted on the adjustable cylindrical roller 18, and a limiting sleeve 20 adapted to the support rod 19 and located on the outside of the main support frame 2. The support rod 19 is pressed and fixed in the limiting sleeve 20 by fixing bolts. The adjustable cylindrical roller 18 facilitates rolling and flattening the laid mulch film. The two support rods 19 facilitate the adjustable fixing of both ends of the adjustable cylindrical roller 18 to the outside of the two main support frames 2. The limiting sleeve 20, in conjunction with the fixing bolts, facilitates the pressing and limiting fixing of the support rod 19.

[0039] Furthermore, such as Figure 2 As shown, the adjustable cylindrical roller 18 includes a first cylindrical roller 22, a second cylindrical roller 23 screwed and rotatably mounted in the first cylindrical roller 22, and a third cylindrical roller 24 screwed and rotatably mounted in the second cylindrical roller 23. The second cylindrical roller 23 has several identical cylindrical rollers 25 screwed together end to end. The first cylindrical roller 22, the second cylindrical roller 23, and the third cylindrical roller 24 cooperate with each other to form the adjustable cylindrical roller 18. The screwed-together cylindrical rollers 25 facilitate the formation of the second cylindrical roller 23, thereby enabling the adjustable length of the adjustable cylindrical roller 18 to be achieved by adding or removing cylindrical rollers 25.

[0040] Furthermore, such as Figure 1 , Figure 3 as well as Figure 4As shown, the edge pressing and burying structure 5 includes a mulch film edge pressing assembly 26 disposed on the inner side of the rear end of the main support frame 2 and a burying cover assembly 27 installed on the rear end of the main support frame 2. The mulch film edge pressing assembly 26 includes a sliding rod 28, a pressing wheel 29 rotatably disposed at the end of the sliding rod 28, and a sliding limiting sleeve 30 disposed on the inner side of the main support frame 2. The sliding limiting sleeve 30 is pressed and fixed in the sliding limiting sleeve 30 by fixing bolts. The mulch film edge pressing assembly 26... 6. It is convenient to press down the two sides of the flattened mulch film to prevent the two sides of the mulch film from curling up, which would affect the operation of the soil covering component 27. The soil covering component 27 is convenient to cover the two sides of the pressed mulch film with soil immediately. The sliding rod 28 is convenient to fix and support the pressing wheel 29. The pressing wheel 29 is convenient to press down the two sides of the flattened mulch film. The sliding limit sleeve 30 is convenient to cooperate with the fixing bolt to squeeze and limit the sliding rod 28 to fix it inside the support main frame 2.

[0041] Furthermore, such as Figure 3 and Figure 4 As shown, the soil covering assembly 27 includes a support sleeve 21 located at the tail end of the main support frame 2, a support shaft 31 slidably mounted in the support sleeve 21, a slider 32 slidably mounted at the end of the support shaft 31, and a soil-dispensing disc 33 rotatably mounted at the end of the slider 32. The support shaft 31 is fixed in the support sleeve 21 by a fixing bolt, and the slider 32 is fixed in the end of the support shaft 31 by a fixing bolt. Four movable wheels 34 are symmetrically mounted on the bottom outer side of the main support frame 2. The support shaft 31 facilitates the sliding positioning and support of the slider 32, and the slider 32 facilitates the rotation and support of the soil-dispensing disc 33. The soil-dispensing disc 33 facilitates the dispensing of soil from the side to cover the edge of the mulch film. The support sleeve 21, in conjunction with the fixing bolt, facilitates the compression and fixation of the support shaft 31. The support shaft 31, in conjunction with the fixing bolt, facilitates the compression and fixation of the slider 32. The four movable wheels 34 facilitate the movement of the device during operation.

[0042] like Figures 1-5 As shown, the principle of the agricultural planting mulch film laying device provided in this embodiment is as follows: When using the device, the appropriate width of the mulch film roll should be selected according to the specific requirements, and then the length of the adjustable connecting support structure 1 should be adjusted according to the width of the mulch film roll, so that the distance between the two support main frame frames 2 can be adapted to the selected mulch film roll.

[0043] When adjusting the adjustable connecting support structure 1, first remove the fixing bolts on the support mother plate sleeve 7 and the shrinking adjustment support rod 8, then pull one side of the main support frame 2 outward a certain distance, and then pull the other side of the main support frame 2 outward a certain distance. Because the distance between the two first fixing slots 9 and the distance between the two second fixing slots 12 are the same, it is necessary to ensure that the distances pulled outward by the two main support frames 2 are the same.

[0044] Then, the two telescopic sub-plates 6 pulled out from the support mother plate sleeve 7 are fixed in the support mother plate sleeve 7 by fixing bolts. At the same time as fixing, the first fixing slot 9 on the support mother plate sleeve 7 and the first fixing slot 9 on the telescopic sub-plate 6 should be aligned, which can increase the firmness.

[0045] Then, the two support sub-rods 10 pulled out from the support rod sleeve 11 are fixed in the support rod sleeve 11 by fixing bolts. At the same time as fixing, the second fixing slot 12 on the support rod sleeve 11 and the first fixing slot 9 on the support sub-rod 10 should be aligned to increase the firmness.

[0046] At this point, the fixing bolts at the end of the fixing head 16 can be unscrewed, and then the mulch film roll can be put onto the stretched telescopic main rod 14 and telescopic sub-rod 15. Then press the telescopic sub-rod 15 until the fixing head 16 can be placed on the second mounting base 17. Then fix the fixing head 16 on the second mounting base 17 with the fixing bolts.

[0047] Then, take out a first cylindrical roller 22 with a support rod 19 installed at one end, and then take out a third cylindrical roller 24 with a support rod 19 installed at one end. Then take out several cylindrical rollers 25. At this time, you can select an appropriate number of cylindrical rollers 25 according to the distance between the two main support frames 2, and then screw them together end to end. Then screw several cylindrical rollers 25 that are screwed together end to end between the first cylindrical roller 22 and the third cylindrical roller 24. Then insert the two support rods 19 into the two limiting sleeves 20 respectively, and after adjusting the height, use fixing bolts to squeeze and limit the support rods 19 in the limiting sleeves 20.

[0048] At this point, the device can be fixedly installed on the fixed connection suspension of the tractor by two connecting rods 35. Then, the lead of the plastic film roll is pulled out and passed through the bottom of the adjustable cylindrical roller 18. The pulled-out plastic film lead is then buried at the edge of the field. The tractor can then be started to lay the plastic film on the field. At this time, the pressing wheel 29 can press the two sides of the laid plastic film, and the soil-moving disc 33 can move the soil on the side to cover the edge of the plastic film.

[0049] When it is necessary to replace the film roll with a smaller width, the length of the adjustable connecting support structure 1 needs to be adjusted according to the width of the film roll so that the distance between the two main support frames 2 can be adapted to the selected film roll.

[0050] When adjusting the adjustable connecting support structure 1, first remove the fixing bolts on the support mother plate sleeve 7 and the shrinking adjustment support rod 8, then push one side of the main support frame 2 inward a certain distance, and then push the other side of the main support frame 2 inward a certain distance. Because the distance between the two first fixing slots 9 and the distance between the two second fixing slots 12 are the same, it is necessary to ensure that the two main support frames 2 are pushed inward a certain distance.

[0051] Then, the two telescopic sub-plates 6 pulled out from the support mother plate sleeve 7 are fixed in the support mother plate sleeve 7 by fixing bolts. At the same time as fixing, the first fixing slot 9 on the support mother plate sleeve 7 and the first fixing slot 9 on the telescopic sub-plate 6 should be aligned, which can increase the firmness.

[0052] At this point, the device can be fixedly installed on the fixed connection suspension of the tractor by the two connecting rods 35. Then, the lead of the plastic film roll is pulled out and passed through the bottom of the adjustable cylindrical roller 18. The pulled-out plastic film lead is then buried at the edge of the field. The tractor can then be started to lay the plastic film on the field. At this time, the pressing wheel 29 can press down the two sides of the laid plastic film, and the soil-moving disc 33 can move the soil on the side to cover the edge of the plastic film.

[0053] The foregoing description illustrates and describes several preferred embodiments of the present invention. However, as previously stated, it should be understood that the present invention is not limited to the forms disclosed herein and should not be construed as excluding other embodiments. It can be used in various other combinations, modifications, and environments, and can be altered within the scope of the inventive concept described herein through the foregoing teachings or techniques or knowledge in related fields. Any modifications and variations made by those skilled in the art that do not depart from the spirit and scope of the present invention should be within the protection scope of the appended claims.

Claims

1. An agricultural mulching film laying device based on planting, characterized by, include: An adjustable connecting support structure (1) is fixedly installed between two main support frames (2). The adjustable connecting support structure (1) is used to adjust the distance between the two main support frames (2) in a telescopic manner. Adjustable mulch film support rod (3), the adjustable mulch film support rod (3) is fixedly installed on the top of the two main support frames (2), the adjustable mulch film support rod (3) is used to support the mulch film roll; Adjustable flattening roller (4), which is telescopically installed on the two main support frames (2) and located below the adjustable mulch film support rod (3), is used to roll and flatten the mulch film laid on the field. Edge pressing and burying structure (5), which is installed on the two main support frames (2) and located behind the adjustable flattening roller (4), is used to press down the edge of the mulch film on the field and bury the edge of the mulch film with soil.

2. The mulching film laying device for agricultural planting according to claim 1, characterized in that: The adjustable connection support structure (1) includes a telescopic subplate (6) set at the bottom of the inner side of the main support frame (2), a support mother plate sleeve (7) sleeved on the two telescopic subplates (6), and telescopic adjustment support rods (8) symmetrically installed between the top of the inner side of the two main support frames (2). The support mother plate sleeve (7) has several first fixing slots (9) through the two telescopic subplates (6), and fixing bolts are screwed into the several first fixing slots (9).

3. The mulching film laying device for agricultural planting according to claim 2, characterized in that: The telescopic adjustment support rod (8) includes a support sub-rod (10) installed on the top inner side of the main support frame (2), a support rod sleeve (11) sleeved on the two support sub-rods (10), and a plurality of second fixing slots (12) opened on the support rod sleeve (11) and passing through the two support sub-rods (10). Fixing bolts are screwed into the plurality of second fixing slots (12). The support sub-rods (10) are installed on the main support frame (2) by bolts. A connecting fixing rod (35) is symmetrically arranged between the support plate sleeve (7) and the support rod sleeve (11) above it. The distance between the two first fixing slots (9) is the same as the distance between the two second fixing slots (12).

4. The mulching film laying device for agricultural planting according to claim 1, characterized in that: The adjustable mulch support rod (3) includes a first mounting base (13), a telescopic main rod (14) hinged to the first mounting base (13), a telescopic sub-rod (15) slidably mounted in the telescopic main rod (14), a fixing head (16) at the end of the telescopic sub-rod (15), and a second mounting base (17) at the end of the fixing head (16). The first mounting base (13) and the second mounting base (17) are respectively mounted on the top of the two main support frames (2) by fixing bolts.

5. The mulching film laying device for agricultural planting according to claim 1, characterized in that: The adjustable flattening roller (4) includes an adjustable cylindrical roller (18), a support rod (19) symmetrically rotated on the adjustable cylindrical roller (18), and a limiting sleeve (20) adapted to the support rod (19) and disposed on the outside of the main support frame (2). The support rod (19) is squeezed and fixed in the limiting sleeve (20) by fixing bolts.

6. The mulching film laying device for agricultural planting according to claim 5, characterized in that: The adjustable cylindrical roller (18) includes a first cylindrical roller (22), a second cylindrical roller (23) rotatably mounted in the first cylindrical roller (22), and a third cylindrical roller (24) rotatably mounted in the second cylindrical roller (23). The second cylindrical roller (23) has several identical cylindrical sub-rollers (25) rotatably connected end to end.

7. The mulching film laying device for agricultural planting according to claim 1, characterized in that: The edge pressing and burying structure (5) includes a mulch film edge pressing assembly (26) disposed on the inner side of the tail end of the main support frame (2) and a burying and sealing assembly (27) installed on the tail end of the main support frame (2). The mulch film edge pressing assembly (26) includes a sliding rod (28), a pressing wheel (29) rotatably disposed at the end of the sliding rod (28), and a sliding limiting sleeve (30) disposed on the inner side of the main support frame (2). The sliding limiting sleeve (30) is pressed and fixed in the sliding limiting sleeve (30) by a fixing bolt.

8. The mulching film laying device for agricultural planting according to claim 7, characterized in that: The soil covering assembly (27) includes a support sleeve (21) set at the tail end of the main support frame (2), a support shaft (31) slidably installed in the support sleeve (21), a slider (32) slidably installed at the end of the support shaft (31), and a soil-removing disc (33) rotatably installed at the end of the slider (32). The support shaft (31) is squeezed and fixed in the support sleeve (21) by fixing bolts, and the slider (32) is squeezed and fixed at the end of the support shaft (31) by fixing bolts. The main support frame (2) is symmetrically and rotatably mounted with moving wheels (34) at the bottom of the outer side.

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