Film lifting mechanism and farmland mulching film recovery device

Abstract

The invention discloses a film lifting mechanism and a farmland mulching film recovery device, and relates to the technical field of mulching film mulching. Comprising a plurality of elastic tooth shafts, and a plurality of film lifting elastic teeth are mounted on each elastic tooth shaft; the periphery of the film lifting roller is connected with a plurality of elastic tooth shafts for providing rotating force; each connecting arm is connected with the end part of the corresponding elastic tooth shaft; each roller is connected with the corresponding connecting arm; and the cam groove is used for limiting the plurality of rollers, so that the rollers move in the cam groove according to tracks, the film lifting elastic teeth are driven to swing, and the residual film is bounced and released. According to the application, the roller is limited by the cam groove and the connecting arm is arranged, so that the function of swinging the film-lifting elastic claw by about 0-25 degrees can be realized; during film lifting, the elastic claw extends out; and during demolding, the elastic teeth can retract.

Description

Technical Field

[0001] The invention relates to the technical field of ground film covering, and in particular to a film removing mechanism and a farmland ground film recycling device. Background Art

[0002] Film mulching technology has become one of the indispensable technologies for agricultural production in my country. In the arid areas of western Liaoning, the importance of film mulching is comparable to that of fertilizers and pesticides, and has become a key material for agricultural production in the region. After 10 years of film mulching practice, by 2019, the area of ​​film mulching in Liaoning Province had expanded to about 300,000 hectares, and the use of agricultural film had also climbed to about 38,000 tons.

[0003] Film mulching brings many significant advantages, such as increasing soil temperature, advancing the sowing period, reducing water evaporation, effectively storing water and conserving moisture, increasing the moisture content of the tillage layer, accelerating the growth cycle of crops and increasing yields, effectively inhibiting weed growth, and prompting crops to mature earlier. However, at the same time, the use of mulch has also caused serious environmental pollution problems.

[0004] Ground film is mainly composed of high molecular hydrocarbons such as polyethylene and polyvinyl chloride, which can remain in the soil for 100 to 200 years without being easily decomposed. Under natural conditions, ground film is almost impossible to degrade. If it is not cleaned and recycled in time, it will pose a major threat to the environment. The ground film widely used in my country is mostly thin ground film with a thickness of only 0.008mm. Although this kind of ground film is low-cost, it is easy to break, making recycling extremely difficult. Every year, a large amount of ground film is left in the soil to form residual film.

[0005] According to surveys, the amount of residual film in the soil of northwest Liaoning is as high as 17.2 grams per square meter, which is equivalent to about 11.5 kilograms of residual film per mu of land (about 667 square meters). During the spring ploughing season, the ground film that was not cleaned in time was turned into the soil, forming residual film in the plow layer. After several years of weathering and corrosion, the strength of these residual films has been greatly reduced and they are easier to break, which has brought increasingly serious residual film pollution problems to our country. In addition, the recovery efficiency of existing residual film recovery equipment is generally not high, and impurities are easily mixed in during the recovery process, which further aggravates the difficulty of controlling residual film pollution. Summary of the invention

[0006] The purpose of the present invention is to provide a film removing mechanism and a farmland film recovery device, which are focused on removing the film on the ground surface and have the advantages of high recovery rate, high operating efficiency, economy and environmental protection.

[0007] To achieve the above purpose, the present application proposes a film-forming mechanism, comprising:

[0008] A plurality of spring tooth shafts, each of which is provided with a plurality of film-lifting spring teeth;

[0009] The film-lifting roller has a plurality of spring-toothed shafts connected to its outer periphery for providing a rotational force;

[0010] A plurality of connecting arms, each connecting arm being connected to the end of a corresponding spring tooth shaft;

[0011] A plurality of rollers, each roller being connected to a corresponding connecting arm;

[0012] The cam groove limits the plurality of rollers so that the rollers move along the track in the cam groove, driving the film-lifting spring teeth to swing, so that the residual film is lifted and removed.

[0013] In one embodiment, the cam groove is formed by a first annular body and a second annular body having different inner diameters.

[0014] In one embodiment, the first annular body is formed by stacking first steel plates, the second annular body is formed by stacking second steel plates, and the inner diameter of the first steel plate is greater than the inner diameter of the second steel plate.

[0015] In one of the embodiments, the film-forming roller is divided into two or more sections, which are connected and fixed by a support sheet. Each support sheet is provided with a plurality of slots, and the spring-tooth shaft is placed in the corresponding slot through a bearing.

[0016] In one of the embodiments, the shell of the film-forming roller has a plurality of arc segments, and a corresponding spring-tooth shaft is disposed on the outer periphery of each arc segment.

[0017] In one embodiment, the film-lifting spring teeth include connected spring seats, and a spring tooth extends outward from each spring seat.

[0018] In one of the embodiments, each film-lifting spring tooth is installed on the corresponding spring tooth shaft through a spring tooth bent plate.

[0019] In one embodiment, the roller has a built-in roller bearing, and the roller bearing is connected to the connecting arm via a shaft.

[0020] The present invention also provides a farmland film recovery device, comprising the above-mentioned film removing mechanism and demoulding mechanism, the demoulding mechanism comprising a demoulding roller, demoulding blades and a demoulding cover, a plurality of demoulding blades are distributed on the periphery of the demoulding roller, the axial dimension of each demoulding blade matches the axial dimension of the spring tooth shaft, and the demoulding cover is half-wrapped around the periphery of the demoulding roller.

[0021] In one of the embodiments, the demoulding roller rotates at a higher speed than the film stripping roller, ensuring that the demoulding blade contacts the film stripping spring teeth multiple times to scrape off the residual film.

[0022] Compared with the prior art, the above technical solution adopted by the present invention has the following advantages:

[0023] 1) The present application limits the roller by means of the cam groove and sets the connecting arm, so that the film-lifting spring tooth can swing about 0-25 degrees: when the film is lifted, the spring tooth will extend; and when the mold is demoulded, the spring tooth will retract.

[0024] 2) The present application can efficiently realize the recycling of farmland surface film (i.e., surface film, non-plough layer film), and has the advantages of high recovery rate, high operating efficiency, few impurities, good economy and strong environmental protection. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 It is a cross-sectional view of the film-lifting mechanism;

[0026] Figure 2 It is a schematic diagram of the connection between the film-lifting mechanism and the demoulding mechanism;

[0027] Figure 3 It is a cross-sectional view of the connection between the film-lifting mechanism and the demoulding mechanism;

[0028] Among them: 1. film-lifting spring tooth, 11. spring seat, 12. spring tooth, 2. spring tooth bent plate, 3. connecting arm, 4. cam groove, 5. spring tooth shaft, 6. roller, 7. film-lifting roller, 8. supporting sheet; 20. demoulding roller, 21. demoulding blade, 22. reinforcing rib. DETAILED DESCRIPTION

[0029] In order to make the technical problems, technical solutions and beneficial effects to be solved by the present application more clearly understood, the present application is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present application and are not used to limit the present application.

[0030] It should be noted that when an element is referred to as being "fixed to" or "disposed on" another element, it can be directly on the other element or indirectly on the other element. When an element is referred to as being "connected to" another element, it can be directly connected to the other element or indirectly connected to the other element.

[0031] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include one or more of the features; in the description of this application, "multiple" means two or more, unless otherwise clearly and specifically defined. "Several" means one or more, unless otherwise clearly and specifically defined.

[0032] In the description of the present application, it should be understood that the terms "center", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc., indicating the orientation or position relationship are based on the orientation or position relationship shown in the drawings, and are only for the convenience of describing the present application and simplifying the description, and do 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 should not be understood as a limitation on the present application.

[0033] In the description of this application, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood according to specific circumstances.

[0034] Example 1

[0035] See also Figure 1 This embodiment provides a film-forming mechanism, including:

[0036] A plurality of spring tooth shafts, each of which is provided with a plurality of film-lifting spring teeth through a spring tooth bent plate, the film-lifting spring teeth comprising connected spring seats, each spring seat having a spring tooth extending outwardly, the spring tooth being used to pick up residual film;

[0037] The film-lifting roller has a plurality of spring-toothed shafts connected to its outer periphery to provide rotational force. When working, it is pulled forward by the tractor and the film-lifting roller is driven to rotate through its reduction gearbox.

[0038] A plurality of connecting arms, each connecting arm is connected to a corresponding end of a spring tooth shaft through a spline shaft;

[0039] A plurality of rollers are provided with roller bearings therein, and the roller bearings are connected to corresponding connecting arms through shafts;

[0040] The cam groove limits the plurality of rollers so that the rollers move along the trajectory in the cam groove, driving the film-lifting spring teeth to swing, so that the residual film is lifted and removed; the cam groove is formed by a first annular body and a second annular body with different inner diameters.

[0041] As a preferred implementation mode provided in this embodiment, in order to save costs, one-piece manufacturing is not adopted. The first annular body is formed by stacking first steel plates and connected by multiple screws, and the second annular body is formed by stacking second steel plates and connected by multiple screws. The inner diameter of the first steel plate is larger than the inner diameter of the second steel plate.

[0042] As a preferred implementation mode provided in this embodiment, in order to save costs, one-piece manufacturing is not adopted. The film-lifting roller is divided into two or more sections, which are connected and fixed by a support sheet. Each support sheet is provided with a plurality of slots, and the spring-tooth shaft is placed in the corresponding slot through a bearing; the shell of the film-lifting roller has a plurality of arc segments, and in order to facilitate the collection of fallen residual film, a corresponding spring-tooth shaft is provided on the outer periphery of each arc segment.

[0043] In order to ensure the film-lifting effect, 65Mn can be used as the material of the film-lifting spring teeth. It can meet the requirements of the film-lifting spring teeth in terms of elasticity and wear resistance, ensuring the efficient film-lifting operation. In addition, during use, attention should be paid to regular inspection and maintenance of the film-lifting spring teeth, and severe worn spring teeth should be replaced in time to ensure that they always maintain a good working condition.

[0044] During operation, the film-lifting roller drives the spring-tooth shaft to rotate, and then starts the roller in the cam groove through the connecting arm (the film-lifting spring tooth does not swing at this time), and then the roller moves along the track in the cam groove. When the connecting arm swings, the spring-tooth shaft is driven to swing through the spline shaft, so that the film-lifting spring tooth swings, and then the ground film is picked up; in addition, the swinging reciprocating motion is conducive to film lifting and demoulding.

[0045] Example 2

[0046] See also Figure 2-3 The present embodiment also provides a farmland mulch film recovery device, including the above-mentioned film removing mechanism and demoulding mechanism, the demoulding mechanism includes a demoulding roller, a demoulding blade and a demoulding cover, a plurality of demoulding blades are distributed on the periphery of the demoulding roller, the axial dimension of each demoulding blade matches the axial dimension of the spring tooth shaft, a plurality of reinforcing ribs are arranged on the demoulding blades, the demoulding cover (not shown in the figure) is half-wrapped around the periphery of the demoulding roller to prevent residual film from flying out.

[0047] As a preferred implementation provided by this embodiment, the rear axle of the tractor outputs power to drive the demoulding roller to rotate through its reduction box, so that the demoulding blade rotates clockwise to scrape off the residual film on the film-lifting mechanism. The demoulding roller rotates faster than the film-lifting roller, ensuring that the demoulding blade contacts the film-lifting spring teeth multiple times to scrape off the residual film, and the residual film is collected in the film collecting box under the action of centrifugal force and wind negative pressure.

[0048] As a preferred implementation mode provided in this embodiment, in order to reduce the adsorption effect between the residual film and the demoulding blade to improve the demoulding efficiency, rubber is preferably used as the material of the demoulding blade.

[0049] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present application, rather than to limit it. Although the present application has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or make equivalent replacements for some of the technical features therein. However, these modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions of the embodiments of the present application.

Claims

1. A film-forming mechanism, characterized in that: include: A plurality of spring tooth shafts, each of which is provided with a plurality of film-lifting spring teeth; The film-lifting roller has a plurality of spring-toothed shafts connected to its outer periphery for providing a rotational force; A plurality of connecting arms, each connecting arm being connected to the end of a corresponding spring tooth shaft; A plurality of rollers, each roller being connected to a corresponding connecting arm; The cam groove limits the plurality of rollers so that the rollers move along the track in the cam groove, driving the film-lifting spring teeth to swing, so that the residual film is lifted and removed.

2. A film-forming mechanism according to claim 1, characterized in that: The cam groove is formed by a first annular body and a second annular body having different inner diameters.

3. A film-forming mechanism according to claim 2, characterized in that: The first annular body is formed by stacking first steel plates, and the second annular body is formed by stacking second steel plates. The inner diameter of the first steel plate is greater than the inner diameter of the second steel plate.

4. A film-forming mechanism according to claim 1, characterized in that: The film-forming roller is divided into more than two sections, which are connected and fixed by a supporting sheet. Each supporting sheet is provided with a plurality of slots, and the spring-tooth shaft is placed in the corresponding slots through a bearing.

5. A film-forming mechanism according to claim 1, characterized in that: The shell of the film-forming roller has a plurality of arc segments, and a corresponding spring-tooth shaft is arranged on the outer periphery of each arc segment.

6. A film-forming mechanism according to claim 1, characterized in that: The film-lifting spring teeth include connected spring seats, and a spring tooth extends outward from each spring seat.

7. A film-forming mechanism according to claim 1, characterized in that: Each film-lifting spring tooth is mounted on a corresponding spring tooth shaft through a spring tooth bent plate.

8. A film-forming mechanism according to claim 1, characterized in that: The roller is internally provided with a roller bearing, and the roller bearing is connected to the connecting arm via a shaft.

9. A device for recovering agricultural film, characterized in that: It comprises the film-lifting mechanism and demoulding mechanism as described in any one of claims 1 to 8, wherein the demoulding mechanism comprises a demoulding roller, a demoulding blade and a demoulding cover, a plurality of demoulding blades are distributed on the periphery of the demoulding roller, the axial dimension of each demoulding blade matches the axial dimension of the spring tooth shaft, and the demoulding cover half-wraps the periphery of the demoulding roller.

10. The farmland mulch film recovery device according to claim 9, characterized in that: The demoulding roller rotates at a higher speed than the film stripping roller, ensuring that the demoulding blade contacts the film stripping spring teeth for multiple times to scrape off the residual film.

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