Rice film mulching transplanter and line-changing film cutting device thereof

Abstract

The utility model provides a rice film-covering transplanter and line-feed film-cutting device thereof, the line-feed film-cutting device comprises a mounting rack, a support, a rotating shaft, a rocker A, a rocker B, a connecting rod A, a film-cutting plate, a film-pressing plate and a cylinder, the film-cutting plate is hinged with the lower end of the mounting rack through the support, the cylinder is connected with the mounting rack and the support, and the rotating shaft is parallel to the mounting rack and is fixed on the support; one end of the rocker A is hinged with the mounting frame, and the other end of the rocker A is connected with the rocker B; the rocker A is parallel to the support, the rocker B is parallel to the mounting frame and is kept in a vertical state, and the rocker A, the support, the rocker B and the mounting frame jointly form a parallelogram structure. According to the utility model, through the design of the geometrical relationship of each part, the film pressing plate can be rolled on a mulching film in advance, and the mulching film is deeply buried after the film is cut, so that manual operation is not needed.

Description

TECHNICAL FIELD

[0001] The utility model relates to rice transplanting machine technical field, concretely is a rice film mulching rice transplanting machine and its row changing film cutting device. BACKGROUND

[0002] Rice film mulching rice transplanting technology is a kind of modern agricultural planting mode that combines mulching with mechanized transplanting.The technology significantly improves the yield and quality of rice by reducing water evaporation, suppressing weed growth and increasing soil temperature.In recent years, with the acceleration of agricultural modernization in China, rice film mulching rice transplanting machine as an important agricultural equipment has been widely used in rice production. This equipment not only can realize precision transplanting, but also can complete film laying simultaneously, thereby effectively reducing labor intensity and greatly improving work efficiency.

[0003] However, in practical application, rice film mulching rice transplanting machine still faces some technical problems to be solved. Among them, manual film cutting and clamping are one of the key bottlenecks restricting its efficient operation. Specifically, after the rice transplanting machine completes the planting of one row of seedlings, the film needs to be cut off in time and fixed at the specified position to ensure the smooth progress of subsequent film laying. This process usually relies on manual operation, that is, the operator manually cuts the film with a tool and buries the film head, and then the rice film mulching rice transplanting machine can start the next row of transplanting work. This working mode not only requires more personnel, reduces the work efficiency of transplanting, but also is difficult to guarantee the quality of film cutting and burying each time, thereby affecting the consistency of the growth environment of rice. UTILITY MODEL CONTENTS

[0004] To solve the technical problem that the current rice film mulching rice transplanting machine needs to rely on manual burying after cutting the film, the utility model provides a rice film mulching rice transplanting machine and its row changing film cutting device, which designs the geometric relationship between the height of the film cutting plate, the height from the bottom of the film pressing plate to the hinge position of the shaft and the support, the height of the hinge position of the mounting bracket and the support, the distance from the hinge position of the mounting bracket and the support to the hinge position of the shaft and the support, the distance from the top end of the film cutting plate to the hinge position of the shaft and the support, and the included angle between the support and the horizontal plane when the film cutting plate contacts the film, so that the film pressing plate can be rolled on the film in advance, and the film is deeply buried after cutting, without manual operation.

[0005] The utility model realizes the above technical purpose through the following technical means.

[0006] A row changing film cutting device of a rice film mulching rice transplanting machine, comprising a mounting bracket, a support, a shaft, a rocker A, a rocker B, a connecting rod A, a film cutting plate, a film pressing plate and a cylinder.

[0007] The mounting frame can be mounted on a rice film mulching transplanter, the film cutting plate is vertically mounted on the support and is hinged to the lower end of the mounting frame through the support, the two ends of the air cylinder are mounted on the mounting frame and the support respectively for driving the support to turn around the hinge point of the mounting frame, the rotating shaft is rotatably connected to the support and is parallel to the mounting frame, one end of the rocker A is hinged to the mounting frame, the other end of the rocker A is hinged to one end of the rocker B, the rocker B is rotatably connected to the rotating shaft, and the other end of the rocker B is connected to the film pressing plate, the rocker A is parallel to the support, the rocker B is parallel to the mounting frame and keeps a vertical state, and the rocker A, the support, the rocker B and the mounting frame jointly form a parallelogram structure.

[0008] Supposing that the height of the film cutting plate is L, the height from the bottom of the film pressing plate to the hinge position of the rotating shaft and the support is M, the distance from the top end of the film cutting plate to the hinge position of the rotating shaft and the support is S1, the distance from the hinge position of the mounting frame and the support to the hinge position of the rotating shaft and the support is S2, the included angle between the support and the horizontal plane when the film cutting plate contacts the mulching film is a, and the included angle between the support and the horizontal plane when the film cutting plate contacts the film pressing plate is θ, the following conditions are met:

[0009]

[0010] Further, the lower end of the film cutting plate is provided with a sawtooth-shaped cutting part.

[0011] Further, the film pressing plate comprises a spring seat connected to the rocker B, and a pressing plate slidingly arranged in the spring seat and connected to the spring seat through a spring.

[0012] Further, a buffer pad is arranged at the position of the film pressing plate contacting the film cutting plate.

[0013] Further, the cross section of the buffer pad is triangular, and the lower end surface of the buffer pad and the film pressing plate above the buffer pad form an included angle β, supposing that the included angle between the film pressing plate and the film cutting plate is γ, then β=γ or 0<β-γ≤5°.

[0014] Further, the material of the buffer pad is rubber.

[0015] Further, the plane in which the rocker A and the rocker B are located is perpendicular to the mounting frame, the film pressing plate is located between the film cutting plate and the mounting frame, and the film pressing plate always lies in a vertical plane.

[0016] Further, the rocker A is connected to the mounting frame through a connecting rod B, one end of the connecting rod B is fixed to the mounting frame, the other end of the connecting rod B is hinged to one end of the rocker A, and the connecting rod B, the rocker A and the rocker B lie in the same plane. ​​​​

[0017] Further, the lower end of the film pressing plate is in a circular arc shape.

[0018] The rice film mulching and transplanting machine comprises the line-changing film cutting device.

[0019] The utility model discloses the beneficial effect is as follows:

[0020] 1. The utility model discloses the height of cutting film board, the height of the bottom of film pressing plate to the hinged position of pivot and support, the distance of the top of cutting film board to the hinged position of pivot and support, the distance of the hinged position of mounting frame and support to the hinged position of pivot and support, the included angle between support and horizontal plane when cutting film board and mulch contact, and the included angle between support and horizontal plane when cutting film board and film pressing plate contact between the geometric relation, ensure that cutting film board just contacts mulch, and film pressing plate has been rolled on mulch in advance, provide certain support effect for mulch. And cutting film board and film pressing plate continue to extend downward after cutting film, and the head of mulch is deeply buried underground, and this design greatly reduces the demand of manual intervention, improves work efficiency, and ensures the consistency of mulch covering.

[0021] 2. The utility model discloses the buffer pad of rubber material is set up at the contact part of cutting film board and film pressing plate, and this design not only can effectively reduce the friction between cutting film board and film pressing plate, thereby prolonging the service life of equipment, but also ensures that the buffer pad can be completely attached on cutting film board when cutting film board and film pressing plate contact by optimizing the included angle between the lower end face of buffer pad and upper film pressing plate. This improvement upgrades the traditional line-surface clamping structure to surface-surface clamping structure, and significantly improves the stability and reliability of clamping.

[0022] 3. The utility model discloses the pressure plate is connected with spring seat through spring, and this structural design can provide certain compressible space for the pressure plate during cutting film, avoids the location of cutting film board caused by the pressure plate unable to continue to move downward, thereby influences the working stability of line-changing film cutting device.

[0023] 4. The utility model discloses the automatic cutting and clamping of mulch are realized through the cooperation of cutting film board and film pressing plate, do not need manual intervention, thereby greatly improving the operation efficiency of rice film mulching and transplanting machine and reducing labor intensity. ACCURACY OF DRAWINGS

[0024] Figure 1 It is the structure diagram of line-changing film cutting device.

[0025] Figure 2 It is the working state diagram of line-changing film cutting device under initial state.

[0026] Figure 3 It is the working state diagram of line-changing film cutting device when just contacting mulch.

[0027] Figure 4 For Figure 3 Structure diagram of each point in the embodiment is projected on the same plane.

[0028] Figure 5 For the working state diagram of the line changing film cutting device after the film is clamped.

[0029] Figure 6 For Figure 5 Structure diagram of each point in the embodiment is projected on the same plane.

[0030] The reference signs are as follows:

[0031] 1 - mounting frame; 2 - support; 3 - rotating shaft; 4 - rocker A; 5 - rocker B; 6 - connecting rod A; 7 - film cutting plate; 8 - film pressing plate; 9 - air cylinder; 10 - connecting rod B. DETAILED DESCRIPTION

[0032] The utility model will be further explained in connection with the drawings and specific embodiments, but the protection scope of the utility model is not limited thereto.

[0033] Example 1

[0034] The line changing film cutting device of the rice film covering and transplanting machine in the embodiment comprises a mounting frame 1, a support 2, a rotating shaft 3, a rocker A 4, a rocker B 5, a connecting rod A 6, a film cutting plate 7, a film pressing plate 8 and an air cylinder 9, Figure 1 For the structure diagram of the line changing film cutting device in the embodiment.

[0035] The mounting frame 1 can be mounted on a rice film mulching transplanter, the film cutting plate 7 is vertically mounted on the support 2 and is hinged to the lower end of the mounting frame 1 through the support 2, the lower end of the film cutting plate 7 has a sawtooth-shaped cutting part, and the film cutting plate 7 is perpendicular to the plane in which the support 2 is located. The two ends of the air cylinder 9 are respectively mounted on the mounting frame 1 and the support 2, and are used to drive the support 2 to rotate around the hinge point of the support 2 and the mounting frame 1. The rotating shaft 3 is rotationally connected to the support 2 and is parallel to the mounting frame 1. One end of the connecting rod B10 is fixed to the mounting frame 1, the other end of the connecting rod B10 is hinged to one end of the rocker A4, the other end of the rocker A4 is hinged to one end of the rocker B5, the rocker B5 is rotationally connected to the rotating shaft 3, the other end of the rocker B5 is connected to the film pressing plate 8, the plane in which the connecting rod B10, the rocker A4 and the rocker B5 are located is perpendicular to the mounting frame 1, the rocker A4 is parallel to the support 2, the rocker B5 is parallel to the mounting frame 1 and keeps a vertical state, and the rocker A4, the support 2, the rocker B5 and the mounting frame 1 together form a parallelogram structure. The film pressing plate 8 is located between the film cutting plate 7 and the mounting frame 1, comprises a spring seat connected to the rocker B5, and a pressing plate slidingly arranged in the spring seat and connected to the spring seat through a spring, and the lower end surface of the pressing plate is in a circular arc shape. Under the driving of the air cylinder 9, the film pressing plate 8 finally contacts the film cutting plate 7, and there is an included angle between the film pressing plate 8 and the film cutting plate 7, so as to clamp the film cut off by the film cutting plate.

[0036] Supposing that the height of the film cutting plate 7 is L, the height from the bottom of the film pressing plate 8 to the hinge position of the rotating shaft 3 and the support 2 is M, the distance from the top end of the film cutting plate 7 to the hinge position of the rotating shaft 3 and the support 2 is S1, the distance from the hinge position of the mounting frame 1 and the support 2 to the hinge position of the rotating shaft 3 and the support 2 is S2, the included angle between the support 2 and the horizontal plane when the film cutting plate 7 contacts the mulching film is α, and the included angle between the support 2 and the horizontal plane when the film cutting plate 7 contacts the film pressing plate 8 is θ, the following conditions are met: ; ;3 ≤ .

[0037] The working principle of the film cutting device is as follows: the working state of the film cutting device in the initial state is shown in Fig. Figure 2 When the film needs to be cut, the air cylinder 9 drives the support 2 to rotate downward, the support 2 drives the film cutting plate 7 and the connecting rod A6 to rotate clockwise downward, the rotating shaft 3 moves downward under the driving of the support 2 and the connecting rod A6, and then drives the rocker B5 to move downward, and the rocker B5 keeps a vertical state in this process.

[0038] Figure 3This diagram illustrates the working state of the film-cutting device when it first contacts the plastic film. Assume the height of the cutting plate 7 is L, the height from the bottom of the pressing plate 8 to the hinge point between the rotating shaft 3 and the support 2 is M, the distance from the top of the cutting plate 7 to the hinge point between the rotating shaft 3 and the support 2 is S1, the distance from the hinge point between the mounting frame 1 and the support 2 to the hinge point between the rotating shaft 3 and the support 2 is S2, and the angle between the support 2 and the horizontal plane when the cutting plate 7 contacts the plastic film is α. The diagram also shows the working state of the cutting plate 7 and the plastic film. The intersection point is denoted as point A, the vertex of the cutting film plate 7 is denoted as point B, the hinge point between the rotating shaft 3 and the support 2 is denoted as point C, the intersection point of point A extending vertically upward with BC is denoted as point D, the bottom endpoint of the pressing film plate 8 is denoted as point E, a perpendicular line is drawn from point D to CE, with the foot of the perpendicular at point F, the intersection point of the pressing film plate 8 and the mulch film is denoted as point G, the hinge point between the mounting frame 1 and the support 2 is denoted as point O, and point C extending vertically upward intersects the horizontal line containing point O at point P. Projecting all points onto the same plane, as shown... Figure 4 As shown, then ∠BAD = ∠CDF = α, BD = CD= DF= At this point, it is necessary to control the distance between point A and point G to be 2-5cm. To ensure that point G coincides with point A or is located below point A during subsequent clamping, it is necessary to control CG ≥ AC, i.e. And at this time CP= Meanwhile, to avoid excessive pre-compression depth of the pressure plate 8 in this state, which would affect the subsequent pressure depth, the pre-compression amount needs to be controlled at this moment, that is, EG ≤ 1cm, EG = M - CG = If ≤1, then M≤ ,Right now .

[0039] After the cutting plate 7 cuts the plastic film, it continues to rotate clockwise downwards until it contacts the pressing plate 8. Figure 5 The figure shows the working state of the film cutting device after film clamping. At this time, the angle between the support 2 and the horizontal plane is θ. Extend the vertical line from point C at this moment upwards and intersect the horizontal line where point O is located at point Q. Then CQ = It can be calculated that from the moment the cutting plate 7 just touches the mulch film until the moment the cutting plate 7 contacts the pressing plate 8, point C drops by a total of [missing value]. That is, during this process, the pressure plate 8 descended a total of By controlling 3 ≤ This design allows the top of the plastic film to be buried 3-5cm further down, greatly reducing the need for manual intervention, improving work efficiency, and ensuring the consistency of plastic film coverage.

[0040] Furthermore, this embodiment also relates to a rice mulching transplanter that includes the above-mentioned row-changing film-cutting device.

[0041] Example 2

[0042] The difference between this embodiment and Embodiment 1 is that a rubber buffer pad is provided at the part of the pressure plate 8 that contacts the cutting plate 7. The cross-section of the buffer pad is triangular, and there is an angle β between its lower end face and the pressure plate 8 above the buffer pad. Assuming that the angle between the pressure plate 8 and the cutting plate 7 is γ, then β-γ=5°, and the rest of the structure remains unchanged.

[0043] The embodiments described above are preferred embodiments of the present invention, but the present invention is not limited to the above embodiments. Any obvious improvements, substitutions or modifications that can be made by those skilled in the art without departing from the essential content of the present invention shall fall within the protection scope of the present invention.

Claims

1. A rice transplanter with plastic film covering and cutting device for changing rows, characterized in that, It comprises a mounting frame (1), a support (2), a rotating shaft (3), a rocker A (4), a rocker B (5), a connecting rod A (6), a film cutting plate (7), a film pressing plate (8) and a pneumatic cylinder (9). The mounting frame (1) can be installed on a rice film mulching and transplanting machine, the film cutting plate (7) is vertically installed on the support (2) and is hingedly connected to the lower end of the mounting frame (1) through the support (2), the two ends of the pneumatic cylinder (9) are respectively installed on the mounting frame (1) and the support (2) and are used for driving the support (2) to turn around the hinged point of the support (2) and the mounting frame (1), the rotating shaft (3) is rotatably connected to the support (2) and is parallel to the mounting frame (1), one end of the rocker A (4) is hingedly connected to the mounting frame (1), the other end of the rocker A (4) is hingedly connected to one end of the rocker B (5), the rocker B (5) is rotatably connected to the rotating shaft (3), and the other end of the rocker B (5) is connected to the film pressing plate (8), the rocker A (4) is parallel to the support (2), the rocker B (5) is parallel to the mounting frame (1) and keeps a vertical state, and the rocker A (4), the support (2), the rocker B (5) and the mounting frame (1) jointly form a parallelogram structure. Assume that the height of the film cutting plate (7) is L, the height from the bottom of the film pressing plate (8) to the hinged position of the rotating shaft (3) and the support (2) is M, the distance from the top end of the film cutting plate (7) to the hinged position of the rotating shaft (3) and the support (2) is S1, the distance from the hinged position of the mounting frame (1) and the support (2) to the hinged position of the rotating shaft (3) and the support (2) is S2, the included angle between the support (2) and the horizontal plane when the film cutting plate (7) is in contact with the mulch film is α, the included angle between the support (2) and the horizontal plane when the film cutting plate (7) is in contact with the film pressing plate (8) is θ, and the following conditions are met: ; ;3 ≤ .

2. The cross-cut film device of claim 1, wherein, The lower end of the film cutting plate (7) has a sawtooth-shaped cutting part.

3. The cross-cut film device of claim 1, wherein, The film pressing plate (8) comprises a spring seat connected to the rocker B (5) and a pressing plate slidingly arranged in the spring seat and connected to the spring seat through a spring.

4. The cross-cut film device of claim 1, wherein, A buffer pad is arranged at the part of the film pressing plate (8) in contact with the film cutting plate (7).

5. The cross-cut film device of claim 4, wherein, The cross section of the buffer pad is triangular, an included angle β exists between the lower end surface of the buffer pad and the film pressing plate (8) above the buffer pad, an included angle γ exists between the film pressing plate (8) and the film cutting plate (7), and β=γ or 0<β-γ≤5°.

6. The cross-cut film device of claim 4, wherein, The material of the buffer pad is rubber.

7. The cross-cut film device of claim 1, wherein, The plane in which the rocker A (4) and the rocker B (5) are located is perpendicular to the mounting frame (1), the film pressing plate (8) is located between the film cutting plate (7) and the mounting frame (1), and the film pressing plate (8) is always located in a vertical plane.

8. The cross-cut film device of claim 1, wherein, The rocker A (4) is connected to the mounting frame (1) through a connecting rod B (10), one end of the connecting rod B (10) is fixed to the mounting frame (1), the other end of the connecting rod B (10) is hingedly connected to one end of the rocker A (4), and the connecting rod B (10), the rocker A (4) and the rocker B (5) are located in the same plane.

9. The cross-cut film device of claim 1, wherein, The lower end of the film pressing plate (8) is in a circular arc shape.

10. A rice film mulching and transplanting machine, characterized by comprising: The line-changing film cutting device is arranged in any one of claims 1-9.

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