Automatic film cutting device for film laying seeding machine

Abstract

The invention relates to an automatic film-breaking device for a film-laying seeding machine, which relates to the field of agricultural machinery. The invention extends the piston rod of the hydraulic cylinder to make the film-pressing soft plate descend and contact the film. The film-pressing soft plate continuously applies flexible pressure to the film during the descent process to fix the film, thereby preventing the film from being blown off the ground by the wind due to lack of constraint after being broken, thus eliminating the need for manual film-pressing operation. Furthermore, the hydraulic motor drives the film-breaking and covering roller through a chain drive, and the film-breaking and covering roller rotates forward during the descent process. The spiral teeth on the film-breaking and covering roller first contact the film to break it, thus eliminating the need for manual film-breaking operation. Through the implementation of the invention, the film-breaking, film-pressing, film-clamping and covering operations that require manual participation are eliminated, and the operations can be achieved by driving the operating components to move through the hydraulic system, thereby effectively improving work efficiency, breaking the difficulties of difficulty and high cost of hiring workers due to the shortage of labor in rural areas, and avoiding collisions and injuries between operators and machines.

Description

Technical Field

[0001] The present invention relates to the field of agricultural machinery, and in particular to an automatic film-breaking device for a film-laying seeder. Background Art

[0002] Since laying film has the functions of heat preservation, moisture conservation, water conservation, weed suppression, production increase and income increase, it has been widely promoted and applied in my country. However, the existing film laying seeder has the problem of manual film breaking when turning at the end of the field. That is, when the film laying seeder completes the film laying operation in a row of working areas and reaches the end of the field, the film needs to be cut and the end of the laid film needs to be covered with soil, pressed, fixed and clamped. After the machine turns and enters the next row of working areas, the end of the film to be laid needs to be covered with soil, pressed and fixed so that the film laying operation in this row of working areas can be carried out.

[0003] Completing the film cutting operation at the edge of the field requires one or two additional workers to ensure seeding efficiency. Manual film cutting, covering, and pressing operations are dependent on the operator's experience and proficiency. Unskilled workers can easily damage the film, requiring manual re-laying, which is time-consuming and labor-intensive. Furthermore, due to labor shortages in rural areas and rising labor costs, the market urgently needs a film-laying seeder with unmanned automatic film cutting, clamping, covering, and pressing functions to reduce costs and improve efficiency. Summary of the Invention

[0004] In order to overcome the shortcomings of the background technology, the present invention provides an automatic film cutting device for a film laying and seeding machine. The present invention utilizes a hydraulic motor and a hydraulic cylinder in conjunction with mechanical components to enable the film laying and seeding machine to have unmanned automatic film pressing, film cutting, soil covering, clamping and other functions.

[0005] In order to achieve the above-mentioned purpose of the invention, the present invention adopts the following technical solution:

[0006] The cam-type hydraulic cylinder is an effective means for cam-type hydraulic cylinders, and the cam-type hydraulic cylinders are used to adjust the film-breaking and covering mechanisms.

[0007] The automatic film cutting device for the film laying seeder, the support frame includes a connecting beam, a support beam, a pull rod limit plate, a hydraulic cylinder bracket and a limit guide tube, a connecting beam is provided at the left end of the support beam, an upwardly extending hydraulic cylinder bracket is provided above the right end of the support beam, limit guide tubes are respectively provided on the front and rear side walls of the support beam on the left side of the hydraulic cylinder bracket, and pull rod limit plates are respectively provided on the front and rear side walls of the support beam on the left side of the limit guide tube.

[0008] In the automatic film cutting device for the film laying seeding machine, the lower bottom surface of the connecting beam and the lower bottom surface of the supporting beam are arranged obliquely.

[0009] The automatic film cutting device for the film laying and seeding machine is described, and the clamping mechanism includes a pull rod, a tension spring, a guide tube welder, a guide rod welder, a clamping spring, a film pressing soft plate, a rubber plate and a clamping rod welder. The guide tube welders are arranged at intervals of four, and a guide rod welder is respectively inserted in the guide tube in each guide tube welder. Two rubber plates are provided under the guide rod welder, and the upper end of each rubber plate is respectively connected to the lower end of the two guide rod welders, and a clamping spring is respectively sleeved on the outer edge surface of each guide rod welder, the upper end of each clamping spring is connected to the lower end of the guide tube in the guide tube welder, and the lower end of each clamping spring is connected to the upper end of the lower connecting plate in the guide rod welder. A pressing soft plate is provided at the bottom, and a clamping rod welder mounting hole is provided at the lower end of the fixed plate in each guide tube welder. The connecting shafts in the clamping rod welder are respectively inserted into the clamping rod welder mounting holes, and the connecting shafts in the clamping rod welder rotate around the clamping rod welder mounting holes. A pull rod connecting seat is provided on the outer edge surface of the connecting shaft in the clamping rod welder, and each pull rod connecting seat is hinged to the lower end of the pull rod through a pin shaft. A tension spring connecting ring is respectively sleeved on the outer edge surface of the lower part of each pull rod, and each tension spring connecting ring is respectively connected to a tension spring, and the other ends of the two tension springs are respectively connected to the guide tube welder, and a connecting hole connected to the clamping mechanism connecting plate is respectively provided on the fixed plate in each guide tube welder.

[0010] The automatic film cutting device for the film-laying seeding machine is provided with external threads on the outer edge surfaces of the upper ends of the pull rods, and nuts are sleeved on the external threads.

[0011] The automatic film cutting device for the film laying seeding machine is provided with a pin through-hole on the outer edge surface of the upper end of the guide rod welded part, and a limit pin is provided in the pin through-hole.

[0012] The automatic film cutting device for the film laying seeding machine, the film cutting and covering mechanism includes a guard guide rod, a hydraulic cylinder connecting plate, a welding guard, a seat bearing, a clamping mechanism connecting plate, a film cutting and covering roller and a hydraulic motor, a hydraulic cylinder connecting plate is provided on the welding guard, and upwardly extending guard guide rods are respectively provided on the welding guards on the left and right sides of the hydraulic cylinder connecting plate, four clamping mechanism connecting plates are spaced apart in front of the welding guard, seat bearings are respectively provided on the left and right sides of the welding guard, a film cutting and covering roller is provided between the two seat bearings, and a hydraulic motor is provided on either side of the welding guard, and a power shaft of the hydraulic motor is connected to either shaft end of the film cutting and covering roller through a power transmission mechanism and transmits power to the film cutting and covering roller.

[0013] The automatic film cutting device for the film laying seeder, wherein the power transmission mechanism is any one of a belt, a chain or a gear.

[0014] The automatic film cutting device for the film laying seeder is provided with a protective cover on the outer side of the power transmission mechanism.

[0015] The automatic film cutting device for the film laying seeder is provided with spiral teeth on the outer edge surface of the film cutting and soil covering roller.

[0016] By adopting the above technical solution, the present invention has the following advantages:

[0017] The present invention extends the piston rod of the hydraulic oil cylinder to lower the film pressing soft plate to contact the film. During the descending process, the film pressing soft plate continuously applies flexible pressure to the film to fix the film, thereby preventing the film from being blown off the ground due to lack of restraint after being broken, thereby eliminating the need for manual film pressing operations.

[0018] Furthermore, the hydraulic motor drives the film-breaking and covering rollers through a chain drive. The film-breaking and covering rollers rotate forward during the descent process. The spiral teeth on the film-breaking and covering rollers first contact the film to break it, eliminating the need for manual film breaking. The film-breaking and covering rollers continue to rotate to throw soil onto the laid film, using the gravity of the soil to fix the film, eliminating the need for manual shoveling of soil to fix the laid film.

[0019] Furthermore, the pull rod of the clamping mechanism of the present invention stops descending due to the limit of the nut and the support plate, and the clamping rod welded part rotates with the hinge point of the clamping rod welded part and the pull rod as the center due to the descending of the welded shield, pressing the film against the rubber plate. When the hydraulic cylinder is extended to the limit position, the clamping rod welded part presses the film against the rubber plate, realizing the film clamping function, eliminating the operation of manually fixing the end of the film to be laid.

[0020] Furthermore, when the film-laying seeder enters the next row of fields, the hydraulic cylinder is lifted, and the clamping rod welded parts rotate in the opposite direction to gradually release the pressure on the film. The film-pressing soft plate continues to apply flexible pressure to the film while flattening it, eliminating the need for manual unfixing and flattening of the film end to be laid.

[0021] Furthermore, the film-breaking and covering rollers rotate in the opposite direction during the rising process using the power provided by the hydraulic motor, throwing the soil onto the film to be laid, and using the gravity of the soil to fix the film, eliminating the need for manual shoveling of soil to fix the film to be laid;

[0022] Through the implementation of the present invention, the film cutting, film pressing, film clamping and soil covering operations that require manual participation are eliminated, and the operations can be achieved by driving the working parts through the hydraulic system, which effectively improves work efficiency, breaks the difficulties of difficulty and high cost of hiring workers due to the shortage of labor in rural areas, and avoids injuries caused by collisions between operators and equipment. In addition, the support frame and welded shield in the present invention connect the required components into a whole, and the installation can be completed by simply connecting the support frame to the film laying and seeding machine. Since there is a large space at the end of the body frame of the existing film laying and seeding machine, the present invention can be directly installed at the end of the film laying and seeding machine. Therefore, the present invention has high versatility. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 It is a schematic diagram of the three-dimensional structure of the present invention;

[0024] Figure 2 Schematic diagram of the three-dimensional structure of the support frame in the present invention;

[0025] Figure 3 This is a schematic diagram of the main structure of the support frame in the present invention;

[0026] Figure 4 Schematic diagram of the three-dimensional structure of the clamping mechanism of the present invention;

[0027] Figure 5 Schematic diagram of the three-dimensional structure of the interrupted membrane covering mechanism of the present invention;

[0028] Figure 6 This is a schematic diagram of the installation position of the present invention installed on a film-laying seeder;

[0029] In the figure: 1. Support frame; 1-1. Connecting beam; 1-2. Support beam; 1-3. Pull rod limit plate; 1-4. Hydraulic cylinder bracket; 1-5. Limit guide tube; 2. Clamping mechanism; 2-1. Pull rod; 2-2. Tension spring; 2-3. Guide tube weldment; 2-4. Guide rod weldment; 2-5. Clamping spring; 2-6. Film pressing soft plate; 2-7. Rubber plate; 2-8. Clamping rod weldment; 3. Film cutting and covering mechanism; 3-1. Guard guide rod; 3-2. Hydraulic cylinder connecting plate; 3-3. Welded guard; 3-4. Seat bearing; 3-5. Clamping mechanism connecting plate; 3-6. Film cutting and covering roller; 3-7. Hydraulic motor; 4. Hydraulic cylinder. DETAILED DESCRIPTION

[0030] The present invention can be explained in more detail by the following examples, but the present invention is not limited to the following examples;

[0031] In order to make the purpose, technical solutions and advantages of the invention more clear, the invention is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that in the description of the invention, unless otherwise specified, the meaning of "multiple" is two or more; the terms "upper", "lower", "left", "right", "inner", "outer", "front end", "rear end", "head", "tail", etc. indicate the orientation or position relationship based on the orientation or position relationship shown in the accompanying drawings, which is only for the convenience of describing the invention and simplifying the description, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the invention. In addition, the terms "first", "second", "third", etc. are used for descriptive purposes only and cannot be understood as indicating or implying relative importance.

[0032] Combined with attachment Figures 1 to 6 The automatic film cutting device for a film laying and seeding machine described in the present invention comprises a supporting frame 1, a clamping mechanism 2, a film cutting and soil covering mechanism 3 and a hydraulic cylinder 4. The connecting beam 1-1 in the supporting frame 1 is connected to the end of the fuselage frame of the film laying and seeding machine, and the pull rod limiting plate 1-3 in the supporting frame 1 is sleeved on the outer edge surface of the pull rod 2-1 in the clamping mechanism 2. The guide tube weldment 2-3 in the clamping mechanism 2 is fixedly connected to the clamping mechanism connecting plate 3-5 in the film cutting and soil covering mechanism 3, and the shield guide rod 3-1 in the film cutting and soil covering mechanism 3 is inserted into the limiting guide tube 1-5 in the supporting frame 1. A hydraulic cylinder 4 is provided on the hydraulic cylinder bracket 1-4 in the supporting frame 1. When implemented, the hydraulic cylinder 4 is connected to the hydraulic system, and the piston rod of the hydraulic cylinder 4 is connected to the hydraulic cylinder connecting plate 3-2 in the film cutting and soil covering mechanism 3, and the hydraulic cylinder 4 drives the film cutting and soil covering mechanism 3 and the clamping mechanism 2 to move up and down.

[0033] When implementing, if Figure 1 、 2As shown in Figure 3, the support frame 1 includes a connecting beam 1-1, a support beam 1-2, a pull rod limit plate 1-3, a hydraulic cylinder bracket 1-4 and a limit guide tube 1-5. A connecting beam 1-1 is provided at the left end of the support beam 1-2, and the lower bottom surface of the connecting beam 1-1 and the lower bottom surface of the support beam 1-2 are inclined. An upwardly extending hydraulic cylinder bracket 1-4 is provided on the right end of the support beam 1-2, and limit guide tubes 1-5 are respectively provided on the front and rear side walls of the support beam 1-2 on the left side of the hydraulic cylinder bracket 1-4, and pull rod limit plates 1-3 are respectively provided on the front and rear side walls of the support beam 1-2 on the left side of the limit guide tube 1-5.

[0034] Further, if Figure 1 、 4As shown, the clamping mechanism 2 includes a pull rod 2-1, a tension spring 2-2, a guide tube weldment 2-3, a guide rod weldment 2-4, a clamping spring 2-5, a film pressing soft plate 2-6, a rubber plate 2-7 and a clamping rod weldment 2-8, the guide tube weldments 2-3 are arranged at intervals of four, and a guide rod weldment 2-4 is respectively inserted into the guide tube of each guide tube weldment 2-3, a pin through-hole is provided on the outer edge surface of the upper end of the guide rod weldment 2-4, a limit pin is provided in the pin through-hole, and two rubber plates are provided below the guide rod weldment 2-4. Rubber plate 2-7, each rubber plate 2-7 is connected to the lower connecting plate of the two guide rod welded parts 2-4, and a clamping spring 2-5 is respectively sleeved on the outer edge surface of each guide rod welded part 2-4. The upper end of each clamping spring 2-5 is connected to the lower end of the guide tube in the guide tube welded part 2-3, and the lower end of each clamping spring 2-5 is connected to the upper side of the lower connecting plate in the guide rod welded part 2-4. A film pressing soft plate 2-6 is respectively provided under each rubber plate 2-7. When implemented, the upper end of the film pressing soft plate 2-6 can be directly set on the rubber plate 2-7 The bottom of the fixing plate 2-3 can also be arranged between the top of the rubber plate 2-7 and the bottom of the lower connecting plate of the guide rod weldment 2-4, that is, the upper end of the film pressing soft plate 2-6 is clamped between the top of the rubber plate 2-7 and the bottom of the lower connecting plate of the guide rod weldment 2-4; the lower end of the fixing plate in each guide tube weldment 2-3 is respectively provided with a clamping rod weldment mounting hole, and the connecting shafts in the clamping rod weldment 2-8 are respectively inserted into the clamping rod weldment mounting holes, and the connecting shafts in the clamping rod weldment 2-8 rotate around the clamping rod weldment mounting holes. A pull rod connecting seat is provided on the outer edge surface of the middle connecting shaft, and each pull rod connecting seat is hinged to the lower end of the pull rod 2-1 through a pin shaft, and a tension spring connecting ring is sleeved on the outer edge surface of the lower part of each pull rod 2-1, and each tension spring connecting ring is connected to a tension spring 2-2, and the other ends of the two tension springs 2-2 are connected to the guide tube weldment 2-3 respectively. An external thread is provided on the outer edge surface of the upper end of the pull rod 2-1, and a nut is sleeved on the external thread. A connecting hole connected to the clamping mechanism connecting plate 3-5 is provided on the fixed plate of each guide tube weldment 2-3.

[0035] Further, if Figure 1 、 5As shown, the film breaking and covering mechanism 3 includes a shield guide rod 3-1, a hydraulic cylinder connecting plate 3-2, a welding shield 3-3, a seat bearing 3-4, a clamping mechanism connecting plate 3-5, a film breaking and covering roller 3-6 and a hydraulic motor 3-7. A hydraulic cylinder connecting plate 3-2 is provided on the welding shield 3-3. On the welding shields 3-3 on the left and right sides of the hydraulic cylinder connecting plate 3-2, upwardly extending shield guide rods 3-1 are respectively provided. Four clamping mechanism connecting plates 3-5 are provided in front of the welding shield 3-3 at intervals. , bearings with seats 3-4 are respectively provided on the left and right sides of the welding shield 3-3, and a film-breaking covering roller 3-6 is provided between the two bearings with seats 3-4. The outer edge surface of the film-breaking covering roller 3-6 is provided with spiral teeth, and a hydraulic motor 3-7 is provided on either side of the welding shield 3-3. The power shaft of the hydraulic motor 3-7 is connected to either shaft end of the film-breaking covering roller 3-6 through a power transmission mechanism and transmits power to the film-breaking covering roller 3-6. When implemented, the power transmission mechanism is any one of a belt, a chain or a gear.

[0036] Further, if Figure 5 As shown, a protective cover is provided on the outside of the power transmission mechanism.

[0037] In the specific implementation of the present invention, the film-breaking and covering roller 3-6 in the film-breaking and covering mechanism 3 is connected to the welding shield 3-3 through the seat bearing 3-4, and the welding shield 3-3 is connected to the support frame 1 through the hydraulic cylinder 4. The support frame 1 connects the present invention and the film-laying and seeding machine into a whole (specifically, Figure 6 As shown, the four sets of guide tube welds 2-3 of the clamping mechanism 2 are bolted to the clamping mechanism connecting plate 3-5 on the welded shield 3-3 of the film cutting and covering mechanism 3. The extension and retraction of the hydraulic cylinder 4 provides the lifting and lowering power for the clamping mechanism 2 and the film cutting and covering roller 3-6 through the welded shield 3-3. The film pressing soft plate 2-6 on the clamping mechanism 2 cooperates with the lifting and lowering process to realize the film pressing function. The hydraulic motor 3-7 in the film cutting and covering mechanism 3 drives the film cutting and covering roller 3-6 through a chain drive, cooperating with the extension and retraction of the hydraulic cylinder 4 to ensure the realization of the film cutting and covering function. The pull rod 2-1 in the clamping mechanism 2, through the tension of the tension spring 2-2 and the limit of the pull rod limit plate 1-3 on the support frame 1, cooperates with the extension and retraction of the hydraulic cylinder 4 to control the clamping rod weld 2-8 of the clamping mechanism 2, ensuring the realization of the clamping function.

[0038] Furthermore, the support frame 1 is installed at the end of the film laying seeder body frame. During normal film laying operations, the support frame 1 lifts the remaining operating components to the highest point through the hydraulic cylinder 4 to prevent the film from being scratched and damaged; during turning operations at the end of the field, the support frame 1 provides stable support for the hydraulic cylinder 4, and the hydraulic cylinder 4 pushes the remaining operating components to perform operations such as film cutting, clamping, covering with soil, and pressing the film.

[0039] Furthermore, the clamping mechanism 2 is installed in front of the welded shield 3-3, the guide tube welded part 2-3 is fixedly connected to the welded shield 3-3 with bolts, and the end thread of the pull rod 2-1 cooperates with the two nuts to support the pull rod limit plate 1-3 on the frame 1 to realize axial limitation of the pull rod 2-1. In the initial state, the hydraulic cylinder 4 does not extend, the welding shield 3-3 is at the highest point, and the clamping rod weld 2-8 rotates counterclockwise against the U-shaped fork at the end of the pull rod 2-1 due to the tension of the tension spring 2-2 on the pull rod 2-1; in the working state, the hydraulic cylinder 4 extends, and the welding shield 3-3 descends. When it descends to the set position, the pull rod 2-1 stops descending, so that the clamping rod weld 2-8 rotates to clamp the film, and the film pressing soft plate 2-6 applies flexible pressure to the film to ensure that the film will not be blown away by the wind during the clamping process, affecting the clamping function; when the hydraulic cylinder 4 is extended to the limit, the welding shield 3-3 descends to the lowest point, and the clamping rod weld 2-8 presses the film and the wrapped soil to the rubber plate 2-7, and cooperates with the clamping spring 2-5, the guide tube weld 2-3, the guide rod weld 2-4, and the rubber plate 2-7 to realize the film clamping function.

[0040] Furthermore, by matching the extension and retraction speed of the hydraulic cylinder 4 with the rotation speed of the hydraulic motor 3-7, the lifting and rotation of the film-breaking and covering roller 3-6 are jointly driven to avoid the damage to the strength of the mechanical components of the film-breaking and covering roller 3-6 or even stoppage due to sudden changes in load during the descent process, thereby ensuring the required film-breaking and covering functions of the device.

[0041] When the present invention is implemented, the support frame 1 serves as the support component of the present invention, the connecting beam 1-1 connects the present invention to the end of the body frame of the film-laying planter, and the support beam 1-2 provides stable support for the working parts and forms an angle with the connecting rod 1-1 (specifically, Figure 3 As shown), in order to avoid damage to the film during operation, the pull rod limit plate 1-3 cooperates with the thread at the end of the pull rod 2-1 and the nut installed thereon to realize axial limitation of the pull rod 2-1, the hydraulic cylinder bracket 1-4 is connected to the cylinder end of the hydraulic cylinder 4, and the guide limit tube 1-5 provides a guide limit function for the shield guide rod 3-1, which cooperates with the extension and contraction of the piston of the hydraulic cylinder 4 to realize the lifting function of the clamping mechanism 2 and the film cutting and covering mechanism 3, thereby ensuring the lifting requirements of the operating parts of the automatic film cutting device.

[0042] As one of the main operating components of the present invention, the clamping mechanism 2 is responsible for completing the temporary fixing, clamping and flattening operations of the film. The guide tube weldment 2-3 is fixed to the clamping mechanism connecting plate 3-5 with bolts, connecting the clamping mechanism 2 and the film-breaking and soil-covering mechanism 3 as a whole, so that the two have a synchronous lifting and lowering motion state; the tension spring 2-2 provides an inclined downward pulling force for the pull rod 2-1, so that the clamping rod weldment 2-8 rotates counterclockwise to the U-shaped fork limit at the end of the pull rod 2-1, ensuring that the clamping rod weldment 2-8 has sufficient force to insert into the soil; the guide tube weldment 2-3 provides vertical guidance for the guide rod weldment 2-4, and cooperates with the clamping spring 2-5, rubber plate 2-7, and clamping rod weldment 2-8 to ensure the stability of film clamping, and will not damage the film during the clamping process, affecting the use of the film; the film pressing soft plate 2-6 provides flexible pressure for the film to be laid, to prevent the wind from blowing the film up, and can flatten the film to be laid when re-laying the film, which is beneficial to the film laying operation in the next operation area.

[0043] The film cutting and covering mechanism 3, one of the main operating components of the present invention, is responsible for completing the film cutting and covering operations. The shield guide rod 3-1 passes through the guide limit tube 1-5. The hydraulic cylinder connecting plate 3-2 is connected to the piston rod of the hydraulic cylinder 4. The film cutting and covering roller 3-6 is bolted to the welded shield 3-3 via a seat bearing 3-4. The hydraulic motor 3-7 is also bolted to the welded shield 3-3. The film cutting and covering roller 3-6 is driven by a chain drive, and the hydraulic cylinder 4 is extended and retracted to achieve the film cutting and covering function.

[0044] The specific application method of the present invention is as follows:

[0045] In the initial state, the tension spring 2-2 provides an oblique downward pulling force for the pull rod 2-1, causing the clamping rod weldment 2-8 to rotate counterclockwise around the hinge point as the center of the circle, and is limited by the U-shaped fork at the end of the pull rod 2-1 to ensure that the clamping rod weldment 2-8 does not interfere with the film-breaking and covering roller 3-6.

[0046] When film cutting operation is required, the hydraulic cylinder 4 extends and the welding shield 3-3 drops accordingly. At the same time, the hydraulic motor 3-7 drives the film cutting and covering roller 3-6 to rotate counterclockwise. The speed of the film cutting and covering roller 3-6 is coordinated with the extension speed of the hydraulic cylinder 4, so that the load of the film cutting and covering roller 3-6 will not affect the strength of the mechanical structure of the automatic film cutting device; the film pressing soft plate 2-6 first contacts the film to provide flexible pressure for the film, and then the film cutting and covering roller 3-6 uses the spiral tooth plate to cut the film and throw the soil onto the laid film to fix the film; when the nut installed at the end of the pull rod 2-1 reaches the limit position of the pull rod limit plate 1-3, the pull rod 2-1 stops descending, and the clamping rod weldment 2-8 rotates clockwise with the hinge point with the pull rod 2-1 as the center, pressing the film and the soil to the rubber plate 2-7, and the clamping spring 2-5 contracts to provide pressure for the guide rod weldment 2-4, so that the film is compressed, the hydraulic cylinder 4 extends to the limit position, and the hydraulic motor 3-7 stops.

[0047] When film laying is required, the hydraulic cylinder 4 retracts, the welding shield 3-3 is lifted, the clamping rod welding part 2-8 rotates counterclockwise, and the hydraulic motor 3-7 drives the film-breaking and covering roller 3-6 to rotate clockwise, throwing the soil onto the film to be laid, the clamping spring 2-5 returns to its position, the film is separated from the rubber plate 2-7, and after the soil thrown onto it is fixed, the film pressing soft plate 2-6 is separated from the film, the hydraulic cylinder 4 retracts to its initial position, and the hydraulic motor 3-7 stops.

[0048] The present invention realizes the unmanned automatic film cutting, clamping and film pressing functions of the film laying and seeding machine by using the mode of driving mechanical parts by the hydraulic cylinder 4 and the hydraulic motor 3-7, and utilizing the expansion and contraction speed of the hydraulic cylinder 4 and the rotation speed of the film cutting and covering roller 3-6 driven by the hydraulic motor 3-7, thereby solving the current problem of rising labor costs caused by labor shortage in rural areas, reducing the labor cost of film laying and seeding operations, avoiding film damage and personal injury caused by insufficient operator experience, improving the operating efficiency of the film laying and seeding machine, and ensuring its operating quality.

[0049] Compared with the prior art, the present invention has the following advantages:

[0050] In the present invention, the hydraulic oil cylinder 4 is extended to make the film pressing soft plate 2-6 descend to contact the film. The film pressing soft plate 2-6 continuously applies flexible pressure to the film during the descent process to fix the film, so as to prevent the film from being blown off the ground due to lack of restraint after being broken, thereby eliminating the need for manual film pressing operation; the hydraulic motor 3-7 drives the film breaking and covering roller 3-6 through a chain drive, and the film breaking and covering roller 3-6 rotates forward during the descent process. The spiral teeth on the film breaking and covering roller 3-6 first contact the film to break it, thereby eliminating the need for manual film breaking operation; the film breaking and covering roller 3-6 continues to rotate to throw the soil onto the laid film, and the film is then covered by the film. The gravity of the soil fixes the film, eliminating the need for manual shoveling of soil to fix the laid film; at the same time, the pull rod 2-1 in the clamping mechanism 2 stops descending due to the limitation of the nut and the pull rod limit plate 1-3, and the clamping rod weldment 2-8 rotates with the hinge point of the clamping rod weldment 2-8 and the pull rod 2-1 as the center due to the descent of the welded shield 3-3, pressing the film and the soil against the rubber plate 2-7. When the hydraulic cylinder 4 is extended to the limit position, the clamping rod weldment 2-8 presses the film onto the rubber plate 2-7, realizing the film clamping function and eliminating the need for manual fixing of the end of the film to be laid.

[0051] When the film-laying seeder enters the next row of fields, the hydraulic cylinder 4 is lifted, and the clamping rod weldment 2-8 rotates in the opposite direction to gradually release the pressure on the film. The film-pressing soft plate 2-6 continues to apply flexible pressure to the film while flattening it, eliminating the need for manual unfixing and flattening of the film to be laid. During the ascent, the film-cutting and soil-covering roller 3-6 rotates in the opposite direction using the power provided by the hydraulic motor 3-7, throwing soil onto the film to be laid, and using the gravity of the soil to fix the film, eliminating the need for manual shoveling to fix the film to be laid. Through the coordinated operation of the above components, the operations of film cutting, film pressing, film clamping, and soil covering that require manual participation are eliminated. These operations can be achieved by simply driving the operating components through the hydraulic system, thereby improving work efficiency, breaking the difficulties of difficulty and high cost of hiring workers due to the shortage of labor in rural areas, and avoiding collisions between operators and equipment. In addition, in the present invention, the supporting frame 1 and the welded shield 3-3 connect the required components into a whole, and the installation can be completed by simply connecting the supporting frame 1 to the film laying seeder. Since there is a large space at the end of the body frame of the existing film laying seeder, the present invention can be directly installed at the end of the film laying seeder, so the present invention has high versatility.

[0052] The parts not described in detail in this invention are prior art.

[0053] The embodiments selected herein for the purpose of disclosing the invention are presently considered suitable, but it should be understood that the invention is intended to include all variations and modifications of the embodiments that fall within the scope of the concept and invention.

Claims

1. An automatic film cutting device for a film-laying seeding machine, comprising a support frame (1), a clamping mechanism (2), a film cutting and soil covering mechanism (3) and a hydraulic cylinder (4), characterized in that: The support frame (1) comprises a connecting beam (1-1), a support beam (1-2), a pull rod limiting plate (1-3), a hydraulic cylinder bracket (1-4) and a limiting guide tube (1-5); a connecting beam (1-1) is provided at the left end of the support beam (1-2); a hydraulic cylinder bracket (1-4) extending upward is provided above the right end of the support beam (1-2); limiting guide tubes (1-5) are respectively provided on the front and rear side walls of the support beam (1-2) on the left side of the hydraulic cylinder bracket (1-4); and a pull rod limiting plate (1-3) is respectively provided on the front and rear side walls of the support beam (1-2) on the left side of the limiting guide tube (1-5); The clamping mechanism (2) comprises a pull rod (2-1), a tension spring (2-2), a guide tube weldment (2-3), a guide rod weldment (2-4), a clamping spring (2-5), a film pressing soft plate (2-6), a rubber plate (2-7) and a clamping rod weldment (2-8), wherein the guide tube weldments (2-3) are arranged at intervals of four, a guide rod weldment (2-4) is respectively inserted into the guide tube of each guide tube weldment (2-3), and a guide rod weldment (2-4) is provided below the guide rod weldment (2-4). There are two rubber plates (2-7), the upper surface of each rubber plate (2-7) is respectively connected to the lower ends of the two guide rod welded parts (2-4), and a clamping spring (2-5) is respectively sleeved on the outer edge surface of each guide rod welded part (2-4), the upper end of each clamping spring (2-5) is connected to the lower end of the guide tube in the guide tube welded part (2-3), and the lower end of each clamping spring (2-5) is connected to the upper surface of the lower connecting plate in the guide rod welded part (2-4). A lamination soft plate (2-6) is provided below, and a clamping rod weld installation hole is provided at the lower end of the fixed plate in each guide tube weld (2-3). The connecting shafts in the clamping rod weld (2-8) are respectively inserted into the clamping rod weld installation holes. The connecting shafts in the clamping rod weld (2-8) rotate around the clamping rod weld installation holes. A pull rod connection seat is provided on the outer edge surface of the connecting shaft in the clamping rod weld (2-8). Each pull rod connection seat is connected to the pull rod (2-3) through a pin shaft. 1) is hinged at the lower end, and a tension spring connecting ring is respectively sleeved on the outer edge surface of the lower part of each pull rod (2-1), each tension spring connecting ring is respectively connected to a tension spring (2-2), and the other ends of the two tension springs (2-2) are respectively connected to the guide tube welded parts (2-3), and a connection hole connected to the clamping mechanism connecting plate (3-5) is respectively provided on the fixed plate in each guide tube welded part (2-3); an external thread is respectively provided on the outer edge surface of the upper end of the pull rod (2-1), and a nut is sleeved on the external thread; The connecting beam (1-1) in the support frame (1) is connected to the end of the fuselage frame of the film-laying seeding machine, the pull rod limiting plate (1-3) in the support frame (1) is sleeved on the outer edge surface of the pull rod (2-1) in the clamping mechanism (2), the guide tube welded part (2-3) in the clamping mechanism (2) is fixedly connected to the clamping mechanism connecting plate (3-5) in the film-breaking and soil-covering mechanism (3), the shield guide rod (3-1) in the film-breaking and soil-covering mechanism (3) is inserted into the limiting guide tube (1-5) in the support frame (1), and a hydraulic cylinder (4) is provided on the hydraulic cylinder bracket (1-4) in the support frame (1), the piston rod of the hydraulic cylinder (4) is connected to the hydraulic cylinder connecting plate (3-2) in the film-breaking and soil-covering mechanism (3), and the hydraulic cylinder (4) drives the film-breaking and soil-covering mechanism (3) and the clamping mechanism (2) to move up and down.

2. The automatic film cutting device for a film laying and seeding machine according to claim 1 is characterized in that: The lower bottom surface of the connecting beam (1-1) and the lower bottom surface of the supporting beam (1-2) are arranged at an inclination.

3. The automatic film cutting device for a film-laying seeding machine according to claim 1 is characterized in that: A pin through-hole is provided on the outer edge surface of the upper end of the guide rod welded part (2-4), and a limiting pin is provided in the pin through-hole.

4. The automatic film cutting device for a film-laying seeding machine according to claim 1 is characterized in that: The film breaking and covering mechanism (3) comprises a shield guide rod (3-1), a hydraulic oil cylinder connecting plate (3-2), a welded shield (3-3), a seat bearing (3-4), a clamping mechanism connecting plate (3-5), a film breaking and covering roller (3-6) and a hydraulic motor (3-7). A hydraulic oil cylinder connecting plate (3-2) is provided on the welded shield (3-3). Shield guide rods (3-1) extending upward are respectively provided on the welded shields (3-3) on the left and right sides of the hydraulic oil cylinder connecting plate (3-2). Four clamping mechanism connecting plates (3-5) are provided at intervals in front of the welding shield (3-3); seat bearings (3-4) are provided on the left and right sides of the welding shield (3-3), respectively; a film-breaking and covering roller (3-6) is provided between the two seat bearings (3-4); a hydraulic motor (3-7) is provided on either side of the welding shield (3-3); a power shaft of the hydraulic motor (3-7) is connected to either shaft end of the film-breaking and covering roller (3-6) through a power transmission mechanism and transmits power to the film-breaking and covering roller (3-6).

5. The automatic film cutting device for a film-laying seeding machine according to claim 4 is characterized in that: The power transmission mechanism is any one of a belt, a chain or a gear.

6. The automatic film cutting device for a film-laying seeding machine according to claim 4 is characterized in that: A protective cover is provided on the outer side of the power transmission mechanism.

7. The automatic film cutting device for a film-laying seeding machine according to claim 4 is characterized in that: The outer edge surface of the film-breaking and soil-covering roller (3-6) is provided with spiral teeth.

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