Combined edge film lifting device for residual film recycling machine

Abstract

The utility model discloses a combined edge film lifting device for a residual film recycling machine, which comprises a film lifting support, a film lifting knife and a film lifting disc rotationally connected onto the film lifting support, and the film lifting disc is positioned in front of the film lifting knife along the running direction; a tool nose is arranged at the front end of the film lifting knife and located at the lowest point of the horizontal height of the film lifting knife, and the horizontal height of the lowest point of the film lifting disc and the horizontal height of the tool nose are both lower than the horizontal height of the edge film soil layer to be taken. The film lifting device has the advantages that the film lifting disc shears, extrudes and crushes a soil layer in front of the film lifting knife, the film lifting knife is inserted into the soil layer to turn up the soil layer and lift a film, the working procedures of soil cutting, soil loosening, soil turning and film lifting are completed through one set of device, the film lifting efficiency is greatly improved, and the film lifting efficiency is greatly improved due to the fact that the film lifting disc shears, extrudes and crushes the soil in front. Therefore, the soil resistance to the rear film-lifting knife is reduced, the service life of the film-lifting knife is prolonged, and the performance requirement on the film-lifting knife is also reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of agricultural equipment, and particularly relates to a combined side film lifting device for a residual film recycling machine. Background Technique

[0002] Under the background that plastic film is the fourth major agricultural production material after seeds, pesticides, and chemical fertilizers, large-scale plastic film mulching planting can ensure the increase in crop yield and income while causing a series of harms to the sustainable development of agriculture, resulting in serious agricultural non-point source pollution problems. In recent years, with the high attention paid to the recycling of agricultural waste plastic film, great progress has been made in the research on the technology and machinery of residual film mechanized recycling. However, during the process of laying plastic film, the side film is often buried and compacted by soil, making it difficult to recycle the side film on both sides of the farmland film bed. This problem has become one of the technical bottlenecks restricting the complete return of waste plastic film to the field.

[0003] For example, Chinese Patent Publication No. CN215121816U, titled "A Side Film Lifting Mechanism and a Residual Film Recycling Machine", discloses that the side film lifting mechanism includes a film lifting knife and a roller. The roller is installed on one side of the film lifting knife. The film lifting knife includes a knife body, and the height position of the tip of the knife body is lower than the lower end of the roller. The side film lifting mechanism is used to take out the waste film buried in the soil. The roller is used to limit the depth of the knife body inserted into the soil when the side film lifting mechanism works, avoiding the knife body entering the soil too deep or too shallow, and improving the working efficiency of the side film lifting mechanism. The residual film recycling machine includes the side film lifting mechanism as described above.

[0004] In the actual production operation process of the above side film lifting device, only the film lifting knife plays the roles of turning the soil and lifting the film. If the soil cutting and loosening are not carried out first, the wear on the film lifting knife is relatively large, and the film lifting knife also needs to have high strength, otherwise it is easy to break. The existing side film lifting devices are difficult to achieve the operation objectives of soil cutting, soil loosening, soil turning, and film lifting, resulting in problems such as low film lifting efficiency and poor film lifting quality. Content of the Utility Model

[0005] The purpose of the utility model is to provide a combined side film lifting device for a residual film recycling machine, which can effectively solve the problems of low film lifting efficiency and poor film lifting quality of the existing side film lifting devices.

[0006] In order to solve the above technical problems, the utility model is realized through the following technical solutions:

[0007] A combined side film lifting device for a residual film recycling machine includes a film lifting support, a film lifting knife, and a film lifting disc rotatably connected to the film lifting support. Along the running direction, the film lifting disc is located in front of the film lifting knife;

[0008] The front end of the film lifting knife is provided with a knife tip, which is located at the lowest point of the horizontal height of the film lifting knife. The horizontal heights of the lowest points of the film lifting disc and the knife tip are both lower than the horizontal height of the soil layer where the side film to be taken is located.

[0009] In the above-mentioned combined side film lifting device for a residual film recycling machine, the film lifting disc is rotatably connected to the support, one end of the support is rotatably connected to the film lifting bracket, and an elastic member is also connected between the support and the film lifting bracket. The elastic member, the film lifting bracket and the support are connected in a triangular shape.

[0010] In the above-mentioned combined side film lifting device for a residual film recycling machine, a bearing is provided between the other end of the support and the film lifting disc.

[0011] In the above-mentioned combined side film lifting device for a residual film recycling machine, a bearing seat is fixed at the other end of the support, the bearing is fixed in the bearing seat, a special-shaped hole is opened at the center of the film lifting disc, the bearing is sleeved on the inner core shaft, and the inner core shaft is fixedly connected to the special-shaped hole.

[0012] In the above-mentioned combined side film lifting device for a residual film recycling machine, the elastic member is a compression spring, a first elastic seat is provided on the support, a second elastic seat is provided on the film lifting bracket, an adjusting rod with adjustable length is connected between the first elastic seat and the second elastic seat, and the elastic member is sleeved on the adjusting rod and abuts against the first elastic seat and the second elastic seat.

[0013] In the above-mentioned combined side film lifting device for a residual film recycling machine, the rear end of the film lifting knife is provided with spaced grid bars.

[0014] In the above-mentioned combined side film lifting device for a residual film recycling machine, the horizontal height of the rear end of the film lifting knife > the horizontal height of the front end, one side of the left and right sides of the film lifting knife is the fixed side, and the other side is the soil turning side. The fixed side is fixedly connected to the film lifting bracket, and the horizontal height of the fixed side > the horizontal height of the soil turning side.

[0015] In the above-mentioned combined side film lifting device for a residual film recycling machine, the film lifting knife is fixed on the film lifting bracket through a film lifting knife seat. The film lifting knife seat includes a tool fixing end, and the tool fixing end has a fixing surface that forms an acute angle with the horizontal plane. The film lifting knife closely adheres to the fixing surface and is fixedly connected thereto.

[0016] Compared with the prior art, the advantages of the present utility model are:

[0017] By setting up a film-forming disc and a film-forming knife arranged front and back, the problems of low film-forming efficiency and poor film-forming quality of the current side film-forming device are solved. The film-forming disc shears and squeezes the soil layer in front of the film-forming knife, and the film-forming knife inserts into the soil layer to turn up the soil layer and form the film. The processes of cutting soil, loosening soil, turning soil, and forming the film are completed by a set of devices, greatly improving the film-forming efficiency. And because the film-forming disc shears and squeezes the soil in front, the soil resistance received by the film-forming knife at the back is reduced, the service life of the film-forming knife is extended, and the performance requirements for the film-forming knife are also reduced.

[0018] Further, the film-forming disc is rotatably connected to the support, one end of the support is rotatably connected to the film-forming support, and an elastic member is also connected between the support and the film-forming support. The elastic member, the film-forming support, and the support are connected in a triangular shape. The elastic member can achieve adaptive adjustment when the film-forming disc presses against relatively hard objects such as crop straws or stones.

[0019] Further, a bearing is provided between the other end of the support and the film-forming disc. The bearing reduces the rotational resistance of the film-forming disc.

[0020] Further, a bearing seat is fixed at the other end of the support, the bearing is fixed in the bearing seat, a special-shaped hole is opened at the center of the film-forming disc, the bearing is sleeved on the inner core shaft, and the inner core shaft is fixedly connected to the special-shaped hole. The special-shaped hole is provided to ensure that the inner core shaft and the film-forming disc can rotate coaxially, and the inner core shaft and the bearing sleeved on it can maintain a rotational connection relationship.

[0021] Further, the elastic member is a compression spring, a first elastic seat is provided on the support, a second elastic seat is provided on the film-forming support, an adjustment rod with adjustable length is connected between the first elastic seat and the second elastic seat, and the elastic member is sleeved on the adjustment rod and abuts against the first elastic seat and the second elastic seat. By adjusting the length of the adjustment rod, the pre-tightening force of the elastic member can be controlled, so as to control what kind of hardness of foreign objects the film-forming disc needs to bounce up and avoid.

[0022] Further, spaced grid bars are provided at the rear end of the film-forming knife. The grid bars can separate the soil from the side film, so as to facilitate better collection of the side film subsequently.

[0023] Further, the horizontal height of the rear end of the film-forming knife > the horizontal height of the front end, and one of the left and right sides of the film-forming knife is a fixed side, and the other side is a soil-turning side. The fixed side is fixedly connected to the film-forming support, and the horizontal height of the fixed side > the horizontal height of the soil-turning side. Making the film-forming knife in an inclined state can better realize the function of turning soil and forming the film, and can better turn up the side film under the soil to the soil surface, improving the film-forming efficiency.

[0024] Furthermore, the film-lifting knife is fixed on the film-lifting bracket through a film-lifting knife seat. The film-lifting knife seat includes a tool fixing end, and the tool fixing end has a fixing surface that forms an acute angle with the horizontal plane. The film-lifting knife is closely attached to the fixing surface and fixedly connected thereto. Through the inclined fixing surface on the film-lifting knife seat, it is very convenient to fix the angle of the film-lifting knife, and the film-lifting knife and the film-lifting knife seat have a larger contact surface, making the fixed connection between the two more firm. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 Structural schematic diagram of a combined side film-lifting device for a residual film recycling machine of the present utility model Figure 1 ;

[0026] Figure 2 Structural schematic diagram of a combined side film-lifting device for a residual film recycling machine of the present utility model Figure 2 。

[0027] Reference numerals are:

[0028] Film-lifting bracket 10, film-lifting knife 20, knife tip 21, grid bar 22, fixed side 23, soil-turning side 24, film-lifting disc 30, special-shaped hole 31, support 40, elastic member 50, bearing 60, bearing seat 70, core shaft 71, first elastic seat 81, second elastic seat 82, adjusting rod 83, film-lifting knife seat 90, fixing surface 91. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0029] A combined side film-lifting device for a residual film recycling machine includes a film-lifting bracket 10, a film-lifting knife 20, and a film-lifting disc 30 rotatably connected to the film-lifting bracket 10. Along the running direction, the film-lifting disc 30 is located in front of the film-lifting knife 20; a knife tip 21 is provided at the front end of the film-lifting knife 20, and the knife tip 21 is located at the lowest point of the horizontal height of the film-lifting knife 20. The horizontal height of the lowest point of the film-lifting disc 30 and the horizontal height of the knife tip 21 are both lower than the horizontal height of the soil layer where the side film is to be taken.

[0030] By arranging the film-lifting disc 30 and the film-lifting knife 20 in a front-back layout, the problems of low film-lifting efficiency and poor film-lifting quality of the current side film-lifting device are solved. The film-lifting disc 30 shears, squeezes and crushes the soil layer in front of the film-lifting knife 20, and the film-lifting knife 20 is inserted into the soil layer to turn up the soil layer and lift the film. The processes of soil cutting, soil loosening, soil turning, and film lifting are completed by a set of devices, greatly improving the film-lifting efficiency. And because the film-lifting disc 30 shears, squeezes and crushes the soil in the front, the soil resistance received by the film-lifting knife 20 at the back is reduced, the service life of the film-lifting knife 20 is also extended, and the performance requirements for the film-lifting knife 20 are also reduced.

[0031] Embodiments of the present utility model will be described in detail below. Examples of the embodiments are shown in the accompanying drawings. The embodiments described below by referring to the drawings are exemplary and are intended to explain the present utility model, and should not be construed as limiting the present utility model.

[0032] In the description of the present utility model, it should be understood that the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings. It is only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as limiting the present utility model.

[0033] In addition, the terms "first" and "second" are only used for descriptive purposes and should not be construed as indicating or implying relative importance or implicitly specifying the quantity of the indicated technical features. Thus, features defined with "first" and "second" may explicitly or implicitly include at least one of such features. In the description of the present utility model, the meaning of "a plurality" is at least two, such as two, three, etc., unless otherwise specifically and clearly defined.

[0034] In the present utility model, unless otherwise clearly specified and defined, the terms "mounted", "connected", "connected to", "fixed" and other terms should be understood in a broad sense. For example, it may be a fixed connection, a detachable connection, or integrated; it may be a mechanical connection, an electrical connection or communicable with each other; it may be directly connected, or indirectly connected through an intermediate medium, and it may be the internal communication of two elements or the interaction relationship between two elements, unless otherwise clearly defined. For those of ordinary skill in the art, the specific meanings of the above terms in the present utility model can be understood according to specific circumstances.

[0035] Refer to Figure 1 、 Figure 2This is an embodiment of a combined side film lifting device for a residual film recycling machine of the present utility model. A combined side film lifting device for a residual film recycling machine includes a film lifting bracket 10, a film lifting knife 20, and a film lifting disc 30 rotatably connected to the film lifting bracket 10. The film lifting bracket 10 plays a main supporting role and also needs to be installed on both sides of the residual film recycling machine by means of bolts or welding, that is, a set of side film lifting devices are installed on both sides of the residual film recycling machine respectively. The front end of the film lifting knife 20 is provided with a knife tip 21, and the knife tip 21 is located at the lowest point of the horizontal height of the film lifting knife 20, ensuring that the knife tip 21 contacts the soil layer first and plays a role in breaking the soil. Along the running direction, the film lifting disc 30 is located in front of the film lifting knife 20. The horizontal height of the lowest point of the film lifting disc 30 and the horizontal height of the knife tip 21 are both lower than the horizontal height of the soil layer where the side film to be taken is located, so that both the film lifting disc 30 and the knife tip 21 can extend into the soil layer. The film lifting disc 30 plays a role in shearing and squeezing the broken soil layer in front, playing a role in cutting and loosening the soil, reducing the pressure on the film lifting knife 20 behind, and enabling the film lifting knife 20 to effectively turn the soil and lift the film.

[0036] For the fixed installation of the film lifting disc 30, the film lifting disc 30 is rotatably connected to a support 40. One end of the support 40 is rotatably connected to the film lifting bracket 10. An elastic member 50 is connected between the support 40 and the film lifting bracket 10. The elastic member 50, the film lifting bracket 10, and the support 40 are connected in a triangular shape. The plane where this triangle is located is parallel to the plane where the film lifting disc 30 is located. During use, the film lifting disc 30 is perpendicular to the soil layer. Setting the elastic member 50 between the support 40 and the film lifting bracket 10 can play a buffering role. When the film lifting disc 30 contacts relatively hard objects such as crop straws and stones, the stress received by the film lifting disc 30 rises rapidly, causing the tension spring to be compressed, thereby avoiding obstacles.

[0037] Furthermore, a bearing 60 is provided between the other end of the support 40 and the film lifting disc 30 to ensure that the film lifting disc 30 can rotate stably for a long time. The specific fixing method of the bearing 60 is as follows: A bearing seat 70 is fixed at the other end of the support 40, the bearing 60 is fixed in the bearing seat 70, and a special-shaped hole 31 is opened at the center of the film lifting disc 30. The special-shaped hole 31 refers to a hole with a non-circular cross-section, such as an elliptical cross-section, a square cross-section, a rhombus cross-section, etc. By using holes with these structures, it can be ensured that there is no relative rotation between the inner core shaft 71 inserted into the special-shaped hole 31 and the film lifting disc 30, and the bearing 60 is sleeved on the inner core shaft 71, thereby realizing the rotational connection between the film lifting disc 30 and the support 40.

[0038] Regarding the elastic member 50 disposed between the support 40 and the film lifting bracket 10, due to different soil types, the softness of the soil also varies. It is necessary to adjust the elastic force of the elastic member 50 according to the current soil type. Therefore, the elastic member 50 generally uses a compression spring. A first elastic seat 81 is provided on the support 40, and a second elastic seat 82 is provided on the film lifting bracket 10. An adjustable rod 83 is provided between the first elastic seat 81 and the second elastic seat 82. One end of the adjustable rod 83 can be fixedly connected to the first elastic seat 81, and the other end passes through the second elastic seat 82 and is connected with a nut. By rotating the nut relative to the adjustable rod 83, the length of the adjustable rod 83 between the first elastic seat 81 and the second elastic seat 82 is adjusted. The elastic member 50 is sleeved on the adjustable rod 83 and its two ends respectively abut against the first elastic seat 81 and the second elastic seat 82, thereby realizing the adjustment of the pre-tightening force of the elastic member 50.

[0039] Regarding the film lifting knife 20, spaced grid bars 22 are provided at its rear section. After turning over the soil, the side film will be located above and the soil will be located below. The grid bars 22 can allow the soil to filter down, so as to better separate the side film from the soil and facilitate the subsequent collection of the side film.

[0040] The film lifting knife 20 can also be set such that the horizontal height at the rear end of the film lifting knife 20 > the horizontal height at the front end. One side of the left and right sides of the film lifting knife 20 is a fixed side 23, and the other side is a soil turning side 24. The fixed side 23 is fixedly connected to the film lifting bracket 10, and the horizontal height of the fixed side 23 > the horizontal height of the soil turning side 24. This can reduce the contact area between the film lifting knife 20 and the soil, enable the film lifting knife 20 to obliquely cut into the soil, and reduce the resistance of the film lifting knife 20 during operation due to the soil.

[0041] Furthermore, in order to maintain this inclined state of the film lifting knife 20 and facilitate the user to install the film lifting knife 20, the film lifting knife 20 is fixed to the film lifting bracket 10 through a film lifting knife seat 90. The film lifting knife seat 90 includes a tool fixing end, and the tool fixing end has a fixing surface 91 that forms an acute angle with the horizontal plane. The film lifting knife 20 closely adheres to the fixing surface 91 and is fixedly connected thereto. In this way, when the user installs the film lifting knife 20, as long as the film lifting knife 20 closely adheres to the fixing surface 91, the film lifting knife 20 can be maintained at a preset inclined angle, and the film lifting knife 20 can closely adhere to the fixing surface 91 as much as possible, so that the film lifting knife 20 and the film lifting knife seat 90 obtain a larger contact area and improve the connection stability between the two.

[0042] The device is installed on both sides of the residual film recycling machine in the form of bolts or welding, and has a symmetrical structure on both sides. During operation, it travels along the traction direction with the traction equipment. The outer edge of the film-lifting disc 30 enters the soil to a certain depth, and shears and squeezes the soil layer in the side film area along the traction direction. At the same time, under the action of the elastic member 50, the film-lifting disc 30 can achieve adaptive adjustment. When the film-lifting disc 30 contacts relatively hard objects such as crop straws and stones, the stress on the film-lifting disc 30 rises rapidly, causing the elastic member 50 to be compressed, so as to avoid obstacles. Under the action of the film-lifting disc 30, the sheared and broken side film and soil mixture are transported to the film-lifting tool 20, and are further broken under the action of the film-lifting tool 20. The broken mixture flips along the wall of the film-lifting tool 20, turning the surface soil over to the bottom layer, and turning the side film and soil buried in the bottom layer of the soil to the surface. At the same time, there is a grid bar 22 structure at the tail of the film-lifting tool 20. Since the soil belongs to granular discrete materials and the side film belongs to sheet materials, the soil particles in the wall of the film-lifting tool 20 can fall back to the surface through the gaps of the grid bar 22, while the side film needs to be transported to the end along the film-lifting tool 20 to fall back to the surface, so as to achieve the purpose of lifting the side film to the surface and creating better operating conditions for subsequent picking and recycling.

[0043] The above are only specific embodiments of the present invention, but the technical features of the present invention are not limited thereto. Any changes or modifications made by those skilled in the art within the scope of the present invention are covered by the patent scope of the present invention.

Claims

1. A combined side film lifting device for a residual film recycling machine, characterized in that, It includes a film-lifting support, a film-lifting knife, and a film-lifting disc rotatably connected to the film-lifting support. Along the running direction, the film-lifting disc is located in front of the film-lifting knife. The front end of the film-lifting knife is provided with a knife tip, and the knife tip is located at the lowest point of the horizontal height of the film-lifting knife. The horizontal height of the lowest point of the film-lifting disc and the horizontal height of the knife tip are both lower than the horizontal height of the soil layer of the side film to be taken.

2. The combined side film lifting device for a residual film recycling machine according to claim 1, wherein, The film-lifting disc is rotatably connected to a support. One end of the support is rotatably connected to the film-lifting support, and an elastic member is also connected between the support and the film-lifting support. The elastic member, the film-lifting support, and the support are connected in a triangular shape.

3. The combined side film lifting device for a residual film recycling machine according to claim 2, wherein, A bearing is provided between the other end of the support and the film-lifting disc.

4. The combined side film lifting device for a residual film recycling machine according to claim 3, characterized in that, A bearing seat is fixed at the other end of the support, the bearing is fixed in the bearing seat, a special-shaped hole is opened at the center of the film-lifting disc, the bearing is sleeved on an inner core shaft, and the inner core shaft is fixedly connected to the special-shaped hole.

5. The combined side film lifting device for a residual film recycling machine according to claim 2, characterized in that, The elastic member is a compression spring. A first elastic seat is provided on the support, a second elastic seat is provided on the film-lifting support, an adjusting rod with adjustable length is connected between the first elastic seat and the second elastic seat, and the elastic member is sleeved on the adjusting rod and abuts against the first elastic seat and the second elastic seat.

6. The combined side film lifting device for a residual film recycling machine according to claim 1, characterized in that The rear end of the film-lifting knife is provided with spaced grid bars.

7. The combined side film lifting device for a residual film recycling machine according to claim 1, characterized in that, The horizontal height of the rear end of the film-lifting knife > the horizontal height of the front end. One side of the left and right sides of the film-lifting knife is a fixed side, and the other side is a soil-turning side. The fixed side is fixedly connected to the film-lifting support, and the horizontal height of the fixed side > the horizontal height of the soil-turning side.

8. The combined side film lifting device for a residual film recycling machine according to claim 7, wherein, The film-lifting knife is fixed on the film-lifting support through a film-lifting knife seat. The film-lifting knife seat includes a tool fixing end, and the tool fixing end has a fixing surface that forms an acute angle with the horizontal plane. The film-lifting knife closely adheres to the fixing surface and is fixedly connected to it.

Images