Overwintering treatment device and method suitable for fungus grass seed reserving in saline-alkali soil

Abstract

The invention relates to the technical field of seed overwintering film covering, and discloses an overwintering treatment device and method suitable for pennisetum giganteum seed reserving in saline-alkali soil, the device comprises a bottom plate, and further comprises a U-shaped frame, two vertical edges of the U-shaped frame are vertically and fixedly installed at the top of the bottom plate; the overwintering assembly is arranged between the two vertical edges of the U-shaped frame, and the overwintering assembly is used for heat preservation and overwintering of the fungus grass; the pressing assembly is arranged on the side face of the bottom plate, and the pressing assembly is used for pressing the overwintering assembly; and the speed change assembly is arranged on the U-shaped frame, and the speed change assembly is used for adjusting the rotating speed of the overwintering assembly. During film covering, a triangular plate can move up and down in a reciprocating mode so that soil can be pressed on a laid film, the rotating speed of the round roller can be automatically changed during use along with the fact that the thickness of the film on the round roller becomes thinner and thinner, the lengths of the films released by the round roller are the same, and then the using effect of the equipment is improved.

Description

Technical Field

[0001] The invention relates to the technical field of seed overwintering film covering, and in particular to a device and method suitable for treating mushroom grass seeds overwintering in saline-alkali land. Background Art

[0002] It is suitable for preserving seeds of Juncao in saline-alkali land over the winter. It is mainly used to help Juncao to successfully survive the winter in extreme environments such as saline-alkali land through technical means and maintain its growth and reproduction ability. The main purpose is to improve the overwintering survival rate of plants on saline-alkali land, especially Juncao, to ensure that they can continue to grow in cold winters and saline-alkali land conditions and provide healthy seeds for the next season.

[0003] The current treatment device suitable for the preservation of Juncao seeds over the winter in saline-alkali land usually covers the saline-alkali land with a film to provide a suitable temperature. However, when covering the saline-alkali land with the film, it does not have the function of simultaneously pressing the laid film, resulting in the need for workers to manually press the film after covering the film, which reduces the effect of use. Therefore, it is urgent to design a treatment device suitable for the preservation of Juncao seeds over the winter in saline-alkali land. Summary of the invention

[0004] The purpose of the present invention is to solve the problems existing in the prior art and to propose a device and method suitable for the wintering treatment of mushroom grass seeds in saline-alkali land.

[0005] In order to achieve the above object, the present invention adopts the following technical solutions:

[0006] A device suitable for treating mushroom grass seeds in saline-alkali land during wintering, comprising a bottom plate, four rollers are installed at the bottom of the bottom plate, and also comprising:

[0007] U-shaped frame, both vertical sides of the U-shaped frame are vertically fixed on the top of the bottom plate;

[0008] The wintering component is arranged between the two vertical sides of the U-shaped frame, and is used to keep the mushroom grass warm during the winter;

[0009] A pressing component, which is arranged on the side of the bottom plate and is used to press the wintering component;

[0010] A speed change assembly is arranged on the U-shaped frame, and the speed change assembly is used to adjust the rotation speed of the wintering assembly.

[0011] As a further technical solution of the present invention, the wintering component includes: a round roller, which is horizontally arranged between the two vertical sides of the U-shaped frame, and a rotating shaft is fixedly installed at the center of both ends of the round roller, sleeves are rotatably installed on the opposite sides of the two vertical sides of the U-shaped frame, and an arc cover is installed on the top of the sleeve by bolts, and a film is sleeved on the surface of the round roller.

[0012] As a further technical solution of the present invention, the clamping assembly includes: a limiting roller, which is horizontally rotatably arranged on the side of the base plate, and two symmetrically arranged support plates are horizontally fixedly installed on the side of the base plate, the limiting roller is rotatably installed between the two support plates, and the film passes under the limiting roller.

[0013] As a further technical solution of the present invention, a U-shaped plate is horizontally arranged above the base plate, two symmetrically arranged spring rods are vertically fixed on the top of the base plate, and the telescopic ends of the two spring rods are fixedly installed on the bottom of the U-shaped plate, and triangular plates are vertically fixedly installed on the bottom of the two long sides of the U-shaped plate, and the two triangular plates are symmetrically arranged.

[0014] As a further technical solution of the present invention, the speed change assembly includes: a first conical roller, which is rotatably installed on the side surface of the vertical side corresponding to the U-shaped frame, and the center of the end surface of the first conical roller is fixedly installed on the center of the corresponding sleeve end surface through a connecting shaft, and the side surface of the U-shaped frame on which the first conical roller is provided is also horizontally rotatably installed with a second conical roller, and the first conical roller and the second conical roller are symmetrically arranged in the center.

[0015] As a further technical solution of the present invention, the first belt is sleeved on the surface of the first conical roller and the second conical roller, and a rectangular plate is provided on the side of the vertical side corresponding to the U-shaped frame. A rectangular groove is provided on the top of the rectangular plate, and the two vertical sides of the first belt are slidably arranged inside the rectangular groove.

[0016] As a further technical solution of the present invention, a lead screw and a limit column are also horizontally rotatably installed on the side surface corresponding to the vertical side of the U-shaped frame, the end of the rectangular plate is slidably sleeved on the surface of the limit column, and the surface of the lead screw is connected to the inside of the rectangular plate through threads.

[0017] As a further technical solution of the present invention, a large pulley is fixedly installed on the end face of the screw, and a small pulley is fixedly installed at the center of the end face of the second tapered roller, and a second belt is sleeved on the surfaces of the large pulley and the small pulley.

[0018] As a further technical solution of the present invention, a rotating rod is horizontally rotatably arranged above the bottom plate, and a limit block is fixedly installed on the top of the bottom plate, the surface of the rotating rod is rotatably installed inside the limit block, the center of the end face of the second conical roller is fixedly installed on the end of the rotating rod through a connecting shaft, and cams are fixedly sleeved at both ends of the surface of the rotating rod, and the surface of the cam is composed of a first arc surface and a yield arc surface, a driving motor is installed on the side of the vertical side of the U-shaped frame, and the output shaft of the driving motor is installed at the center of the end face of the rotating rod.

[0019] A method for using a device suitable for treating junk grass seeds during winter in saline-alkali land comprises the following steps:

[0020] S1: First, move the bottom plate to the inside of the saline-alkali land. It should be noted that a mounting frame for connecting with the tractor is installed on the bottom plate. The bottom plate and the tractor are connected through the mounting frame. Then, remove the arc plate and place the rotating shafts at both ends of the round roller with the film wound inside the two sleeves. Finally, install the arc cover on the sleeve to clamp the rotating shaft.

[0021] S2: Then, the end of the film is pulled through the limiting roller and the end of the film is pressed with soil. The traction machine drives the base to move while starting the driving motor. The traction machine drives the bottom plate and the connecting parts thereon to move together. The driving motor drives the rotating rod to rotate. The rotation of the rotating rod drives the cam and the second conical roller to rotate. The rotation of the second conical roller drives the first belt and the small pulley to rotate. The rotation of the first belt drives the first conical roller to rotate. The rotation of the first conical roller drives the sleeve to rotate. The rotation of the sleeve drives the round roller to rotate. The round roller rotates to release the film, and the film can be laid on the soil.

[0022] S3: The rotation of the small pulley drives the second belt to rotate, the rotation of the second belt drives the large pulley to rotate, the rotation of the large pulley drives the lead screw to rotate, the rotation of the lead screw drives the rectangular plate to move, the movement of the rectangular plate drives the first belt to move, so that the speed of the first conical roller can be adjusted to achieve speed change, so that as the thickness of the film on the round roller becomes thinner, the speed of the round roller becomes faster and faster, ensuring the uniformity of film release;

[0023] S4: The rotation of the cam will contact the long side of the U-shaped plate. When the second curved surface on the cam contacts the U-shaped plate, the U-shaped plate is at the highest point and the spring rod generates tension. The triangular plate does not contact the soil, and the height of the U-shaped plate remains unchanged during the contact between the second curved surface and the U-shaped plate. As the cam rotates, when the first curved surface on the cam contacts the U-shaped plate, the tension generated by the spring rod will cause the U-shaped plate and the triangular plate to move downward, and the triangular plate will enter the soil. As the triangular plate moves with the bottom plate, the soil can be turned over to the laid film and pressed down. During the contact between the first curved surface and the U-shaped plate, the height of the U-shaped plate remains unchanged, so as to achieve continuous and intermittent contact between the triangular plate and the soil. Further, the laid broadcasting film can be intermittently pressed down by the soil.

[0024] The beneficial effects of the present invention are:

[0025] Firstly, the present invention, through the arrangement of the wintering assembly, the pressing assembly and the speed change assembly, can make the triangular plate move up and down reciprocatingly when covering the film, so as to achieve the soil pressing on the laid film, and as the thickness of the film on the round roller becomes thinner and thinner, the rotation speed of the round roller can be automatically changed during use, so that the length of the film released by the round roller is the same, thereby improving the use effect of the device;

[0026] Secondly, the present invention, through the arrangement of the overwintering component, the clamping component and the speed change component, can make the U-shaped plate move horizontally for a certain distance after moving up or down when different surfaces of the cam contact with the U-shaped plate, so as to achieve intermittent contact between the triangular plate and the soil, thereby avoiding the situation where the soil completely presses the film and makes it impossible to breathe, thereby improving the use effect of the equipment. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] Figure 1 This is a schematic diagram of the structure of a device for preserving seeds of Juncao in saline-alkali land during the winter, which is proposed by the present invention;

[0028] Figure 2 for Figure 1 A magnified schematic diagram of part A;

[0029] Figure 3 This is a rear structural schematic diagram of a device for treating saline-alkali land mushroom grass seeds during wintering proposed by the present invention;

[0030] Figure 4 This is a schematic diagram of a U-shaped frame cross-sectional structure of a device for treating saline-alkali land mushroom grass seeds during wintering proposed by the present invention;

[0031] Figure 5 for Figure 4 A magnified schematic diagram of part B;

[0032] Figure 6 This is a schematic diagram of the structure of a device for preserving seeds of mushroom grass in saline-alkali land and overwintering, which is proposed by the present invention;

[0033] Figure 7 This is a schematic diagram of the first conical roller and the second conical roller and their connection structure of a device suitable for preserving mushroom grass seeds and overwintering in saline-alkali land proposed by the present invention.

[0034] In the figure: 1, bottom plate; 2, U-shaped frame; 3, round roller; 4, film; 5, U-shaped plate; 6, triangular plate; 7, spring rod; 8, limit roller; 9, support plate; 10, first conical roller; 11, second conical roller; 12, first belt; 13, rectangular plate; 14, limit column; 15, lead screw; 16, second belt; 17, large pulley; 18, small pulley; 19, drive motor; 20, rotating rod; 21, cam; 22, sleeve; 23, arc cover; 24, rectangular groove; 25, limit block; 26, first arc surface; 27, second arc surface. DETAILED DESCRIPTION

[0035] In order to make the technical means, creative features, objectives and effects achieved by the present invention easy to understand, the present invention is further explained below in conjunction with specific implementation methods.

[0036] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0037] Please see attached Figure 1 -Attached Figure 7 , a device suitable for treating the overwintering of grass seeds in saline-alkali land, comprising a bottom plate 1, and also comprising: a U-shaped frame 2, an overwintering component, a pressing component and a speed change component, wherein the two vertical sides of the U-shaped frame 2 are vertically fixedly installed on the top of the bottom plate 1, the overwintering component is arranged between the two vertical sides of the U-shaped frame 2, and the overwintering component is used to keep the grass warm overwintering, the pressing component is arranged on the side of the bottom plate 1, and the pressing component is used to press the overwintering component, the speed change component is arranged on the U-shaped frame 2, and the speed change component is used to adjust the speed of the overwintering component, and four rollers are installed at the bottom of the bottom plate 1;

[0038] As described above, the release speed of the film 4 can be automatically changed through the wintering component and the speed change component during use, so that the length of the film 4 released by the round roller 3 is the same and will not change due to the thickness of the film 4, thereby improving the uniformity of the laying of the film 4.

[0039] Please see attached Figure 1 -Attached Figure 4 In a preferred embodiment, the wintering assembly includes: a round roller 3, which is horizontally arranged between the two vertical sides of the U-shaped frame 2, and a rotating shaft is fixedly installed at the center of both ends of the round roller 3, and sleeves 22 are rotatably installed on the opposite sides of the two vertical sides of the U-shaped frame 2, and an arc cover 23 is installed on the top of the sleeve 22 by bolts, and a film 4 is sleeved on the surface of the round roller 3;

[0040] Specifically, by laying a film 4 on the saline-alkali land, the Juncao seeds can be kept warm, so that the Juncao seeds have a suitable survival temperature in winter.

[0041] Please see attached Figure 2 -Attached Figure 7 In a preferred embodiment, the pressing assembly includes: a limiting roller 8, the limiting roller 8 is horizontally rotatably arranged on the side of the bottom plate 1, and two symmetrically arranged support plates 9 are horizontally fixedly installed on the side of the bottom plate 1, the limiting roller 8 is rotatably installed between the two support plates 9, and the film 4 passes under the limiting roller 8, a U-shaped plate 5 is horizontally arranged above the bottom plate 1, two symmetrically arranged spring rods 7 are vertically fixed on the top of the bottom plate 1, and the telescopic ends of the two spring rods 7 are fixedly installed at the bottom of the U-shaped plate 5, and the bottoms of the two long sides of the U-shaped plate 5 are vertically fixed with triangular plates 6, and the two triangular plates 6 are symmetrically arranged;

[0042] Furthermore, the triangular plate 6 is continuously and intermittently in contact with the soil, and the laid film can be intermittently pressed by the soil. In summary, the film 4 can be laid continuously by repeating the above steps.

[0043] Please see attached Figure 1 -Attached Figure 7 In a preferred embodiment, the speed change assembly includes: a first tapered roller 10, the first tapered roller 10 is rotatably mounted on the side of the U-shaped frame 2 corresponding to the vertical side, and the center of the end face of the first tapered roller 10 is fixedly mounted on the center of the end face of the corresponding sleeve 22 through a connecting shaft, the side of the U-shaped frame 2 provided with the first tapered roller 10 is also horizontally rotatably mounted with a second tapered roller 11, and the first tapered roller 10 and the second tapered roller 11 are centrally symmetrically arranged, the first tapered roller 10 and the second tapered roller 11 are sleeved with a first belt 12 on the surface, the U-shaped frame 2 is also provided with a rectangular plate 13 corresponding to the vertical side, a rectangular groove 24 is provided on the top of the rectangular plate 13, and the two vertical sides of the first belt 12 are slidably arranged inside the rectangular groove 24, the U-shaped frame 2 is also horizontally rotatably mounted with a lead screw 15 and a limit column 14 on the side of the vertical side, and the end of the rectangular plate 13 is symmetrically arranged. The first and second tapered rollers 11 are provided with a plurality of rollers 17, 18 and 19, and the second tapered rollers 11 are provided with a plurality of rollers 19, 18 and 19, respectively. The first and ...

[0044] Preferably, the rotation speed of the first tapered roller 10 can be adjusted to achieve variable speed, so that as the thickness of the film 4 on the round roller 3 becomes thinner, the rotation speed of the round roller 3 becomes faster and faster, thereby ensuring the uniformity of the release of the film 4.

[0045] The working principle of the present invention is as follows: first, the bottom plate 1 is moved to the inside of the saline-alkali land. It should be noted that a mounting frame for connecting with a tractor is installed on the bottom plate 1. The bottom plate 1 is connected with the tractor through the mounting frame. Then, the arc plate is removed and the rotating shafts at both ends of the round roller 3 with the film 4 wound around are placed inside the two sleeves 22. Finally, the arc cover 23 is installed on the sleeve 22 to clamp the rotating shaft.

[0046] Then, the end of the film 4 is pulled through the limiting roller 8 and the end of the film 4 is pressed with the soil. The traction machine drives the base to move and the driving motor 19 is started at the same time. Then, the traction machine drives the bottom plate 1 and the connecting parts thereon to move together. The driving motor 19 drives the rotating rod 20 to rotate. The rotation of the rotating rod 20 drives the cam 21 and the second conical roller 11 to rotate. The rotation of the second conical roller 11 drives the first belt 12 and the small pulley 18 to rotate. The rotation of the first belt 12 drives the first conical roller 10 to rotate. The first conical roller 10 rotates the sleeve 22 to rotate. The rotation of the sleeve 22 drives the round roller 3 to rotate. The round roller 3 rotates to release the film 4, so that the film 4 can be laid on the soil.

[0047] The rotation of the small pulley 18 drives the second belt 16 to rotate, the rotation of the second belt 16 drives the large pulley 17 to rotate, the rotation of the large pulley 17 drives the lead screw 15 to rotate, the rotation of the lead screw 15 drives the rectangular plate 13 to move, the movement of the rectangular plate 13 drives the first belt 12 to move, so that the rotation speed of the first conical roller 10 can be adjusted to achieve speed change, so that as the thickness of the film 4 on the round roller 3 becomes thinner and thinner, the rotation speed of the round roller 3 becomes faster and faster, thereby ensuring the uniformity of the release of the film 4;

[0048] The cam 21 rotates and contacts with the long side of the U-shaped plate 5. When the second curved surface 27 on the cam 21 contacts with the U-shaped plate 5, the U-shaped plate 5 is at the highest point and the spring rod 7 generates tension. The triangular plate 6 does not contact the soil, and during the period when the second curved surface 27 contacts with the U-shaped plate 5, the height of the U-shaped plate 5 remains unchanged. As the cam 21 rotates, when the first curved surface 26 on the cam 21 contacts with the U-shaped plate 5, the tension generated by the spring rod 7 will cause the U-shaped plate 5 and the triangular plate 6 to move downward, and the triangular plate 6 will enter the soil. As the triangular plate 6 moves with the bottom plate 1, the soil can be turned over to the laid film 4 and pressed, and during the period when the first curved surface 26 contacts with the U-shaped plate 5, the height of the U-shaped plate 5 remains unchanged to achieve continuous and intermittent contact between the triangular plate 6 and the soil. Further, the laid broadcast mill can be intermittently pressed with soil. In summary, the film 4 can be laid continuously by reciprocating in sequence, so that the mushroom grass seeds have a suitable temperature for wintering, thereby improving the use effect of the equipment.

[0049] In addition, it should be understood that although the present specification is described according to implementation modes, not every implementation mode contains only one independent technical solution. This description of the specification is only for the sake of clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each embodiment may also be appropriately combined to form other implementation modes that can be understood by those skilled in the art.

Claims

1. A device suitable for treating Juncao seeds in saline-alkali land during winter, comprising a bottom plate (1), four rollers being installed at the bottom of the bottom plate (1), characterized in that: Also includes: A U-shaped frame (2), wherein both vertical sides of the U-shaped frame (2) are vertically fixedly mounted on the top of the base plate (1); A wintering component, the wintering component is arranged between two vertical sides of the U-shaped frame (2), and the wintering component is used to keep the mushroom grass warm during the winter; A pressing component, the pressing component is arranged on the side of the base plate (1), and the pressing component is used to press the wintering component; A speed change assembly is arranged on the U-shaped frame (2), and the speed change assembly is used to adjust the rotation speed of the wintering assembly.

2. A device for treating Juncao seeds in saline-alkali land during winter according to claim 1, characterized in that: The wintering component comprises: a round roller (3), the round roller (3) is horizontally arranged between the two vertical sides of the U-shaped frame (2), and a rotating shaft is fixedly installed at the center of both ends of the round roller (3), sleeves (22) are rotatably installed on the side surfaces opposite to the two vertical sides of the U-shaped frame (2), and an arc cover (23) is installed on the top of the sleeve (22) by bolts, and a film (4) is sleeved on the surface of the round roller (3).

3. A device for treating Juncao seeds in saline-alkali land during winter according to claim 2, characterized in that: The clamping assembly comprises: a limiting roller (8), the limiting roller (8) is horizontally rotatably arranged on the side of the base plate (1), and two symmetrically arranged supporting plates (9) are horizontally fixedly installed on the side of the base plate (1), the limiting roller (8) is rotatably installed between the two supporting plates (9), and the film (4) passes under the limiting roller (8).

4. A device for treating Juncao seeds in saline-alkali land during winter according to claim 3, characterized in that: A U-shaped plate (5) is horizontally arranged above the bottom plate (1), two symmetrically arranged spring rods (7) are vertically fixed on the top of the bottom plate (1), and the telescopic ends of the two spring rods (7) are fixedly installed on the bottom of the U-shaped plate (5), and triangular plates (6) are vertically fixedly installed on the bottoms of the two long sides of the U-shaped plate (5), and the two triangular plates (6) are symmetrically arranged.

5. A device for treating Juncao seeds in saline-alkali land during winter according to claim 4, characterized in that: The speed change assembly comprises: a first tapered roller (10), the first tapered roller (10) being rotatably mounted on the side surface of the U-shaped frame (2) corresponding to the vertical side, and the end surface center of the first tapered roller (10) being fixedly mounted on the end surface center of the corresponding sleeve (22) via a connecting shaft, and the side surface of the U-shaped frame (2) on which the first tapered roller (10) is provided is also horizontally rotatably mounted with a second tapered roller (11), and the first tapered roller (10) and the second tapered roller (11) are centrally symmetrically arranged.

6. A device for treating Juncao seeds in saline-alkali land during winter according to claim 5, characterized in that: The first tapered roller (10) and the second tapered roller (11) are sleeved with a first belt (12), and the U-shaped frame (2) is further provided with a rectangular plate (13) on the side corresponding to the vertical side, and a through rectangular groove (24) is provided on the top of the rectangular plate (13), and both vertical sides of the first belt (12) are slidably arranged inside the rectangular groove (24).

7. A device for treating Juncao seeds in saline-alkali land during winter according to claim 6, characterized in that: The U-shaped frame (2) is also provided with a lead screw (15) and a limit column (14) for horizontal rotation on the side surface corresponding to the vertical side, the end of the rectangular plate (13) is slidably sleeved on the surface of the limit column (14), and the surface of the lead screw (15) is connected to the inside of the rectangular plate (13) through a thread.

8. A device for treating Juncao seeds in saline-alkali land during winter according to claim 7, characterized in that: A large pulley (17) is fixedly mounted on the end face of the lead screw (15), and a small pulley (18) is fixedly mounted at the center of the end face of the second tapered roller (11). The surfaces of the large pulley (17) and the small pulley (18) are sleeved with a second belt (16).

9. A device for treating Juncao seeds in saline-alkali land during winter according to claim 8, characterized in that: A rotating rod (20) is horizontally rotatably arranged above the bottom plate (1), and a limit block (25) is fixedly installed on the top of the bottom plate (1). The surface of the rotating rod (20) is rotatably installed inside the limit block (25). The center of the end face of the second conical roller (11) is fixedly installed on the end of the rotating rod (20) through a connecting shaft, and cams (21) are fixedly sleeved at both ends of the surface of the rotating rod (20), and the surface of the cam (21) consists of a first arc surface (26) and a yield arc surface (27). A driving motor (19) is installed on the vertical side of the U-shaped frame (2), and the output shaft of the driving motor (19) is installed at the center of the end face of the rotating rod (20).

10. The method for using the device for treating saline-alkali land mushroom grass seeds during wintering according to claim 9, characterized in that: The following steps are involved: S1: First, the bottom plate (1) is moved to the inside of the saline-alkali land. It should be noted that a mounting frame for connecting to a traction machine is installed on the bottom plate (1). The bottom plate (1) is connected to the traction machine through the mounting frame. Then, the arc plate is removed and the rotating shafts at both ends of the round roller (3) with the film (4) wound around it are placed inside the two sleeves (22). Finally, the arc cover (23) is installed on the sleeve (22) to clamp the rotating shaft. S2: Then, the end of the film (4) is pulled through the limiting roller (8) and the end of the film (4) is pressed with soil. The base is driven to move by the traction machine and the driving motor (19) is started. The traction machine drives the bottom plate (1) and the connecting parts thereon to move together. The driving motor (19) drives the rotating rod (20) to rotate. The rotation of the rotating rod (20) drives the cam (21) and the second conical roller (11) to rotate. The rotation of the second conical roller (11) drives the first belt (12) and the small pulley (18) to rotate. The rotation of the first belt (12) drives the first conical roller (10) to rotate. The first conical roller (10) drives the sleeve (22) to rotate. The sleeve (22) drives the round roller (3) to rotate. The round roller (3) rotates to release the film (4), so that the film (4) can be laid on the soil. S3: The rotation of the small pulley (18) drives the second belt (16) to rotate, the rotation of the second belt (16) drives the large pulley (17) to rotate, the rotation of the large pulley (17) drives the lead screw (15) to rotate, the rotation of the lead screw (15) drives the rectangular plate (13) to move, the movement of the rectangular plate (13) drives the first belt (12) to move, so that the rotation speed of the first conical roller (10) can be adjusted to achieve speed change, so that as the thickness of the film (4) on the round roller (3) becomes thinner, the rotation speed of the round roller (3) becomes faster and faster, thereby ensuring the uniformity of the release of the film (4); S4: The cam (21) rotates and contacts the long side of the U-shaped plate (5). When the second arc surface (27) on the cam (21) contacts the U-shaped plate (5), the U-shaped plate (5) is at the highest point and the spring rod (7) generates a pulling force. The triangular plate (6) does not contact the soil. During the contact between the second arc surface (27) and the U-shaped plate (5), the height of the U-shaped plate (5) remains unchanged. As the cam (21) rotates, when the first arc surface (26) on the cam (21) and the U-shaped plate (5) are ) when the first curved surface (26) and the U-shaped plate (5) are in contact, the tension generated by the spring rod (7) will cause the U-shaped plate (5) and the triangular plate (6) to move downward, and the triangular plate (6) will enter the soil. As the triangular plate (6) moves along with the bottom plate (1), the soil can be turned over onto the laid film (4) and pressed down. During the period when the first curved surface (26) and the U-shaped plate (5) are in contact, the height of the U-shaped plate (5) remains unchanged, so that the triangular plate (6) can be in continuous and intermittent contact with the soil, and further, the laid broadcasting can be intermittently pressed down by the soil.

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