Residual film raking and picking mechanism and raking and picking combined type pre-sowing residual film recycling device

Abstract

The invention discloses a residual film raking mechanism and a raking combined type pre-sowing residual film recycling device, and belongs to the technical field of residual film recycling, the residual film raking mechanism comprises a driving roller, a first raking roller, a second raking roller and a picking belt, raking elastic teeth are distributed on the picking belt and are wound on the driving roller, the first raking roller and the second raking roller, and the picking belt is arranged on the first raking roller and the second raking roller. A film raking section in contact with the ground is formed between the first raking roller and the second raking roller, and a film picking section running obliquely upwards is formed between the driving roller and the first raking roller; according to the residual film raking and picking mechanism, residual film picking is conducted in the mode that raking and picking are conducted firstly and then raking and picking are conducted, the fragile residual film cannot be crushed again by overlarge mechanical force, and the recovery efficiency of the residual film can be effectively improved; a film collecting box, a film and soil separating mechanism and the residual film raking and picking mechanism are sequentially arranged on a machine frame of the before-sowing residual film recycling device from front to back, residual films and impurities can be effectively separated in a film removing area, and a good foundation is laid for the follow-up residual film packaging procedure.

Description

Technical Field

[0001] The present invention belongs to the technical field of residual film recovery, and in particular relates to a residual film raking mechanism and a pre-sowing residual film recovery device combining raking and picking. Background Art

[0002] Due to its significant warming and moisture conservation effects, mulching technology has become a core technology for soil pretreatment before sowing crops such as corn and cotton; however, long-term mulching has led to the continued deterioration of the problem of residual film pollution in cultivated land. At the same time, the thickness of the ground film widely used in current agricultural production is generally below 0.008mm. This feature makes the ground film lack toughness during actual use and is very easy to be damaged, especially in the critical stage of crop harvest after autumn every year. Whether it is the repeated crushing of various agricultural machinery shuttling through the fields, or the land preparation process carried out for the next crop planting, it will inevitably cause large-scale damage to the ground film, resulting in a large amount of broken ground film left in the fields. By the time the spring sowing of the following year comes, the fields are already covered with all kinds of residual film. Although after the autumn harvest, there are a large number of mechanical equipment specially used for recycling ground film on the market, aiming to minimize the amount of residual film, but limited by the current situation of the residual film itself being broken and the complex actual environment in the field, there are still a large number of broken ground films that are difficult to be completely cleaned, making the amount of residual film in the field soil show a serious trend of increasing year by year.

[0003] Not only that, the ground film left in the fields before spring sowing has many tricky characteristics. Due to long-term natural weathering and erosion and repeated rubbing during farming operations, most of these residual films are broken into irregularly shaped and small fragments, scattered in the vast fields, making it extremely difficult to pick them up manually or to grab them precisely by machines. Given the unique properties of the residual film before spring sowing, the methods of collecting and cleaning it are naturally significantly different from those of the residual film after autumn. The recycling model of the residual film after autumn cannot be simply applied. It is necessary to adapt to local conditions, implement precise policies, and explore efficient solutions that are suitable for them.

[0004] At present, in the process of striving to overcome the problem of pre-sowing residual film recovery, various types of recovery machines have emerged on the market, among which the most representative ones are air suction type, gear rod type, spring tooth type and soil shovel type. However, these machines have obvious common shortcomings in their operation mode. Most of them adopt a relatively primitive film-soil separation method, which makes it difficult to achieve efficient and accurate residual film recovery. Therefore, it is imperative to design a residual film recovery machine with good pre-sowing residual film recovery effect. Summary of the Invention

[0005] The present invention provides a residual film raking mechanism and a pre-sowing residual film recovery device that combines raking and picking. The residual film is picked up by first raking and then raking. This method will not cause the fragile residual film to be broken for the second time by excessive mechanical force, and can effectively improve the recovery efficiency of the residual film, solving the problem of low pre-sowing residual film picking rate.

[0006] This application provides a residual film picking mechanism, including: A driving roller, the driving roller is used to connect with the transmission mechanism; The lifting rollers include a first lifting roller and a second lifting roller, wherein the first lifting roller and the second lifting roller are arranged in parallel and are located below the driving roller and can contact the ground; A picking belt is provided with picking spring teeth, which is wound around the active roller, the first picking roller and the second picking roller, and forms a film picking section between the first picking roller and the second picking roller, and a film picking section between the active roller and the first picking roller.

[0007] As the preferred solution of this embodiment: The length of the picking spring teeth is 145-155 mm, and the interval between two adjacent picking spring teeth is 38-42 mm.

[0008] As the preferred solution of this embodiment: The axis connecting the active roller, the first picking roller and the second picking roller forms an obtuse triangle.

[0009] As the preferred solution of this embodiment: The axes of the first hugging roller and the second hugging roller are located in the same horizontal plane, or the axis of the first hugging roller is higher than the axis of the second hugging roller to form a hugging inclination angle.

[0010] As the preferred solution of this embodiment: It comprises a rake frame, wherein the active roller, the first picking roller and the second picking roller are all pivotally connected to corresponding positions of the rake frame.

[0011] The present invention also provides a pre-sowing residual film recovery device of a combined raking and picking type, comprising a frame, The frame is provided with a film collecting box, a film-soil separation mechanism and any one of the residual film picking mechanisms described above in sequence from front to back; the film inlet of the film collecting box is located on the opposite side of the film-soil separation mechanism, and the film-soil separation mechanism comprises a debris removal auger, a wind separation component and a film stripping component, the debris removal auger is located between the film inlet of the film collecting box and the wind separation component, and the film stripping component is located above the debris removal auger.

[0012] As a preferred solution of this embodiment: the film stripping assembly is fixed on the rake frame of the residual film picking mechanism, which includes a film stripping scraper group and a comb tooth group. The film stripping scraper group is arranged above the comb tooth group. The film stripping scraper group is arranged opposite to the picking spring teeth and can change the airflow direction of the wind separation assembly to the film inlet side of the film collecting box. The comb tooth group is located directly above the debris removal auger and is arranged opposite to the film inlet of the film collecting box.

[0013] As a preferred solution of this embodiment: the wind separation component includes a fan and a conveying pipeline, and the conveying pipeline is connected to the fan and is located below the debris removal auger.

[0014] As a preferred solution of this embodiment: the film collecting box is fixed to the frame through a support rod and a hydraulic cylinder, and one side of the bottom of the film collecting box is pivotally connected to the support rod, and the other side is pivotally connected to the hydraulic cylinder. The extension of the hydraulic cylinder can drive the film collecting box to rotate relative to the support rod to dump the residual film.

[0015] As a preferred solution of this embodiment: a transmission mechanism is provided on the frame, which includes a gearbox, a transmission chain and a gear set. The gearbox is connected to the power shaft of the active roller and the wind separation component through the transmission chain and the gear set to drive the active roller and the wind separation component to rotate synchronously.

[0016] Compared with the existing technology, the advantages of this solution are: (1) The residual film raking mechanism uses the first and second raking rollers designed specifically to cooperate with the raking spring teeth to pick up the residual film (carrying impurities) from the field by raking and picking. Compared with the traditional direct picking method, the raking first and then picking method will not cause the fragile residual film to be broken by excessive mechanical force for the second time, which can effectively improve the recovery efficiency of the residual film.

[0017] (2) The tooth length of the picking spring teeth and their layout spacing on the picking belt were adaptively adjusted. This can better pick up the residual film on the one hand, and on the other hand, it can greatly avoid the problem of impurities trapped in the residual film being unable to be separated.

[0018] (3) The residual film recovery device before sowing can effectively separate the residual film and impurities in the film stripping area through the coordinated cooperation of the residual film picking mechanism, the debris removal auger, the wind separation component and the film stripping component, laying a good foundation for the subsequent residual film packaging process.

[0019] (4) The impurity removal auger, wind separation assembly, film removal scraper group and comb tooth group work together to form an impurity drop channel and a residual film guide channel in the spatial structure, thereby improving the separation efficiency of residual film and impurities and the collection efficiency of residual film. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 This is a schematic diagram of the overall structure of the residual film picking mechanism provided in an embodiment of the present invention.

[0021] Figure 2 A schematic diagram of the overall structure of the picking belt provided in an embodiment of the present invention.

[0022] Figure 3 The embodiment of the present invention provides Figure 2 A local enlarged schematic diagram of point A in the middle.

[0023] Figure 4 This is a schematic diagram of the main structure of a pre-sowing residual film recovery device that combines scooping and lifting with an embodiment of the present invention.

[0024] Figure 5 This is a schematic structural diagram of the operating principle of the pre-sowing residual film recovery device combined with scooping and picking provided in an embodiment of the present invention.

[0025] Figure 6 This is a schematic diagram of the overall structure of a pre-sowing residual film recovery device that combines scooping and picking provided in an embodiment of the present invention.

[0026] Reference numerals 10 is the active roller; 11 is the first picking roller; 12 is the second picking roller; 13 is the picking belt; 131 is the picking spring teeth; 132 is the film holding section; 133 is the film picking section; 20 is the frame; 21 is the rake frame; 23 is the film collecting box; 24 is the debris removal auger; 25 is the fan; 26 is the conveying pipeline; 27 is the film stripping scraper group; 28 is the comb tooth group; 29 is the hydraulic cylinder; 30 is the gearbox; 31 is the transmission chain; 32 is the gear group; 33 is the travel wheel; 34 is the pressing roller. DETAILED DESCRIPTION

[0027] The present invention will be further described in detail below in conjunction with specific embodiments and with reference to the accompanying drawings. It should be emphasized that the following description is merely illustrative and is not intended to limit the scope of the present invention and its applications.

[0028] Example 1: like Figure 1-3The figure is a schematic diagram of the residual film picking mechanism provided by the present embodiment, which comprises an active roller 10, a first picking roller 11, a second picking roller 12 and a picking belt 13, wherein the roller diameters of the active roller 10, the first picking roller 11 and the second picking roller 12 are the same or similar, and the first picking roller 11 is located at the front end of the second picking roller 12, that is, downstream in the picking direction; as the name implies, the active roller 10 should be connected to the transmission mechanism to receive the torque of the transmission mechanism and then drive the picking belt 13 to rotate; the first picking roller 11 and the second picking roller 12 are arranged side by side and are located below the active roller 10 and can contact the ground; the picking belt 13 is provided with picking spring teeth 131, which are wound around the active roller 10, the first picking roller 11 and the second picking roller 12, and form a spring tooth 131 between the first picking roller 11 and the second picking roller 12 that can contact the ground The film-picking section 132 in contact forms a film-picking section 133 running obliquely between the active roller 10 and the first picking roller 11. The film-picking section 132 can press the picking spring teeth 131 down to the ground to rake the residual film under the coordinated action of the first picking roller 11 and the second picking roller 12. The raking distance is affected by the length of the raking section and the rotation speed of the picking belt 13, and can be adjusted according to actual needs. The film-picking section 133 can lift the picking spring teeth 131 from underground to above the ground under the action of the first picking roller 11 and the active roller 10; it can be seen that this embodiment adopts the method of first raking and then lifting (or picking) to pick up the residual film. Compared with the traditional direct picking method, this method will not cause the fragile residual film to be broken again by excessive mechanical force, which can effectively improve the recovery efficiency of the residual film and solve the existing problem of low picking rate due to the breakage of the residual film before sowing.

[0029] As a preferred solution of this embodiment, the length of the picking teeth 131 is 145-155 mm, and the interval between two adjacent picking teeth 131 is 38-42 mm, and the preferred length is 150 mm. This makes it easier to penetrate deep below the surface to better pick up the residual film, avoid secondary crushing of the residual film by the tooth tips, and ensure the integrity of the residual film in the raking stage as much as possible; preferably, the interval between two adjacent picking teeth 131 is 40 mm, which can greatly avoid the picking teeth 131 being arranged too densely, resulting in soil blocks being entrained and carried away when picking up the residual film, resulting in too many impurities being picked up.

[0030] It should be noted that the specific structure of the picking spring teeth 131 and the installation method on the picking belt 13 are all existing structures, such as Figure 3 This embodiment will not be described in detail here.

[0031] As a preferred solution of this embodiment, the axes of the first picking roller 11 and the second picking roller 12 are located in the same horizontal plane, that is, the first picking roller 11 and the second picking roller 12 are arranged in the horizontal direction, or the axis of the first picking roller 11 is slightly higher than the axis of the second picking roller 12 by 5-20 mm. In this embodiment, since the first picking roller 11 is located downstream in the picking direction, this design will form a certain rake inclination angle between the first picking roller 11 and the second picking roller 12. The rake inclination angle can achieve deep picking and shallow picking, further improving the efficiency of picking up residual film.

[0032] As a preferred solution of this embodiment, the axis connecting the active roller 10, the first hugging roller 11 and the second hugging roller 12 forms an obtuse triangle, as shown in FIG. Figure 1 As shown, that is, the film picking section 133 formed between the active roller 10 and the first picking roller 11 is tilted forward, so that the residual film and impurities are easily separated from the picking spring teeth 131 with the help of gravity, without affecting the normal operation of the residual film picking mechanism.

[0033] As a preferred solution of this embodiment, it includes a rake frame 21, and the active roller 10, the first picking roller 11 and the second picking roller 12 are all pivotally connected to the corresponding positions of the rake frame 21. It can be understood that the rake frame 21 serves as a support frame, which is used to fix the active roller 10, the first picking roller 11 and the second picking roller 12 so that the residual film picking mechanism forms an obtuse-angle tripod, so that the residual film picking mechanism can be sold or used separately.

[0034] The specific usage principles of this embodiment include: The picking belt 13 is driven to rotate by the active roller 10. During the rotation, the picking spring teeth 131 on the picking belt 13 are pressed down to below the ground surface by the action of the first picking roller 11 and the second picking roller 12 to first rake the residual film. As the picking belt 13 rotates, the film-picking section 132 will move to the film-picking section 133. At this time, the picking spring teeth 131 are lifted from underground to above the ground surface by the action of the active roller 10 and the first picking roller 11, and then the residual film is picked up. That is, this embodiment adopts the method of first raking and then picking to pick up the residual film. Compared with the traditional direct picking method, this method will not cause the fragile residual film to be excessively damaged. The large mechanical force secondary crushing can effectively improve the recovery efficiency of residual film and solve the problem of low picking rate of residual film before sowing. In addition, the present embodiment also adjusts the length and layout density of the rake and pick-up spring teeth 131. By adjusting the length of the rake and pick-up spring teeth 131, it is convenient to penetrate deep below the surface to better rake and pick up the residual film, avoid the secondary crushing of the residual film by the tooth tip, ensure the integrity of the residual film in the rake stage as much as possible, and further improve the picking efficiency. The layout density of the rake and pick-up spring teeth 131 can greatly avoid the rake and pick-up spring teeth 131 being arranged too densely, resulting in soil blocks being entrained when rake and picking up the residual film, resulting in too many impurities picked up.

[0035] Example 2: This embodiment also provides a pre-sowing residual film recovery device that combines scooping and picking. Figure 4 Or 6, the residual film recovery device includes a frame 20, and the frame 20 is provided with a film collecting box 23, a film-soil separation mechanism and the residual film picking mechanism described in the above embodiment in sequence from front to back; the film inlet of the film collecting box 23 is located on the opposite side of the film-soil separation mechanism, that is, the film inlet is facing the side of the film-soil separation mechanism, so that the residual film separated by the film-soil separation mechanism can enter the film collecting box 23. It can be understood that the size of the film collecting box 23 can be selected according to actual needs. In this embodiment, the film collecting box 23 is preferably a rectangular box body, the top of the rectangular box body is the film outlet, and the film outlet end is preferably provided with a flip The film-soil separation mechanism includes a debris removal auger 24, a wind separation component and a film stripping component. The debris removal auger 24 is located between the film inlet of the film collecting box 23 and the wind separation component to receive the heavier impurities carried by the residual film picking mechanism. The film stripping component is located above the debris removal auger 24 and fixed on the frame 20 to separate the residual film and impurities from the picking spring teeth 131 on the residual film picking mechanism. Specifically, the debris removal auger 24 is arranged horizontally relative to the frame 20 and is located 20 cm below the film inlet of the film collecting box 23 and obliquely above the wind separation component, as shown in FIG. Figure 4 Or as shown in 5; when in use, the picking spring teeth 131 carry the picked residual film and impurities and move upward, and the residual film and impurities are peeled off from the picking spring teeth 131 under the action of the demoulding component. At the same time, the wind separation component provides enough wind force to separate the peeled residual film and heavier impurities. The heavier impurities fall into the impurity removal auger 24 under the action of gravity. The residual film is guided into the film collecting box 23 under the coordinated cooperation of the wind separation component and the demoulding component to realize the collection of the residual film. It can be understood that the impurities dropped into it by the spiral blades of the impurity removal auger 24 can be pushed to the outside.

[0036] As a preferred solution of this embodiment, the film stripping assembly is fixed on the rake frame 21 of the residual film picking mechanism. It should be noted that the rake frame 21 can be a part of the frame 20, that is, it is welded integrally with the frame 20, or it can be an independent part, which is welded or screwed to the frame 20 separately. The specific selection is based on actual needs. For example, when the residual film picking mechanism is sold and used as a separate part, the rake frame 21 is a separate part, which serves as the supporting structure of the residual film picking mechanism; when the residual film picking mechanism and the residual film recovery device are used and sold as a whole, the rake frame 21 is a part of the frame 20. In this embodiment, preferably, in the pre-sowing residual film recovery device, the rake frame 21 is a part of the frame 20.

[0037] In this embodiment, the film stripping assembly includes a film stripping scraper group 27 and a comb tooth group 28. The film stripping scraper group 27 is arranged above the comb tooth group 28. The film stripping scraper group 27 is arranged relative to the picking spring teeth 131 and can change the airflow direction of the wind separation assembly to the film collection box 23 side. The comb tooth group 28 is located just above the impurity removal auger 24 and is arranged relative to the film inlet of the film collection box 23. In this embodiment, the width of the film stripping scraper group 27 should be adapted to the width of the picking spring teeth 131 of the residual film picking mechanism. The rear end of the demoulding scraper group 27 can contact the picking spring teeth 131 and peel off the residual film and impurities carried on the picking spring teeth 131. The peeled residual film and impurities fall on the comb tooth group 28, and the front end can change the airflow direction of the wind separation component to the film collection box 23 side, thereby achieving the function of diverting and guiding the residual film. Specifically, the airflow provided by the fan 25 is blocked by the demoulding scraper group 27 and will be redirected to the film inlet end of the film collection box 23, thereby driving the residual film into the film collection box 23 through the film inlet. Figure 5 As shown; in this embodiment, it can be understood that the gap between two adjacent comb teeth in the comb tooth group 28 should ensure that heavier impurities can pass through, and the comb tooth group 28 can realize the separation of residual film and impurities in conjunction with the wind separation component. Specifically, the wind force provided by the wind separation component can retain the light residual film at the upper end of the comb tooth group 28 without affecting the falling of heavier impurities, and the separation function is realized at this time.

[0038] As a preferred solution of this embodiment, the wind separation component includes a fan 25 and a conveying pipeline 26. The conveying pipeline 26 is a closed channel composed of partitions, etc., which is connected to the air outlet of the fan 25 and is located below the impurity removal auger 24; it can be understood that the wind force provided by the fan 25 ensures that heavier impurities can fall normally and lighter residual film can not be blown to the outside of the film collecting box 23; the specific power and model of the fan 25 can be tested and selected according to actual needs, and this embodiment does not make specific limitations here.

[0039] As a preferred solution of this embodiment, the film collecting box 23 is fixed to the frame 20 by a support rod and a hydraulic cylinder 29, and one side of the bottom of the film collecting box 23 is pivotally connected to the support rod and the other side is pivotally connected to the hydraulic cylinder 29. The extension of the hydraulic cylinder 29 can drive the film collecting box 23 to rotate relative to the support rod to dump the residual film; it can be understood that the power and stroke of the hydraulic cylinder 29 can be tested and selected according to actual needs. This embodiment does not make specific restrictions here, and it is sufficient to ensure that the film collecting box 23 can be pushed to reverse and dump the residual film; the structure of the film collecting box 23 has been specifically described above, that is, the film outlet is the top of the film collecting box 23. Therefore, the hydraulic cylinder 29 extends a certain distance and only needs to achieve a certain angle of inclination of the film collecting box 23 to dump the residual film without a large extension stroke; it can be understood that the reversal direction of the film collecting box 23 can be set as needed. In this embodiment, the hydraulic cylinder 29 is preferably arranged on the right side of the front view of the film collecting box 23, and the support rod is arranged on the left side of the front view of the film collecting box 23. After the hydraulic cylinder 29 is extended, the film collecting box 23 can be driven to reverse to the left.

[0040] As a preferred solution of this embodiment, a transmission mechanism is provided on the frame 20, which includes a gearbox 30, a transmission chain 31 and a gear set 32. The gearbox 30 is connected to the power shafts of the active roller 10 and the fan 25 through the transmission chain 31 and the gear set 32 ​​to drive the active roller 10 and the fan 25 to rotate synchronously, that is, the active roller 10 and the fan 25 are driven to rotate synchronously through a transmission chain 31, which simplifies the layout structure and cost.

[0041] In this embodiment, the frame 20 is provided with a travel wheel 33 and a pressure roller 34. The pressure roller 34 is located at the rear end of the travel wheel 33. In order to achieve vibration reduction, a vibration reduction mechanism is preferably provided on the frame. The vibration reduction mechanism is arranged between the frame and the travel wheel. It is used to buffer the frame to avoid the rigid connection between the frame and the travel wheel causing loosening or damage to the mounting mechanism on the frame due to bumps; in this embodiment, the vibration reduction mechanism is preferably a telescopic cylinder or a telescopic spring.

[0042] The working width of this device is increased to 3m, which can greatly improve working efficiency.

[0043] The specific operating principle of this embodiment includes: power is transmitted from the rear output shaft of the tractor to the gearbox 30, and a part of the power distributed by the gearbox 30 is transmitted to the active roller 10 of the residual film picking mechanism, and the picking spring teeth 131 on the picking belt 13 adopt a picking and picking method to pick up the residual film mixed with impurities, and the active roller 10 drives the picking spring teeth 131 to move obliquely upward along the rake frame 21. When it moves to the film stripping area, the picking spring teeth 131 contact the film stripping scraper group 27, and the residual film and impurities fall onto the comb tooth group 28; the other part of the power is transmitted to the fan 25, and the wind force generated by the fan 25 blows the residual film on the comb tooth group 28 into the film collecting box 23 through the guide plate, while heavier impurities such as soil fall into the impurity removal auger 24 (as mentioned above Figure 5As shown in the figure), the debris removal auger 24 discharges it to one side of the frame 20. When the amount of residual film accumulated in the film collecting box 23 reaches a certain value, the oil supply hydraulic cylinder of the oil pipeline extends, driving the film collecting box 23 to rotate relative to the frame 20 around the hinge. The cover of the film collecting box 23 rotates relative to the box body around the hinge due to its own gravity, and the cover of the film collecting box 23 opens, completing the automatic film unloading.

[0044] In summary, the device of this embodiment uses the targeted designed first picking roller 11 and second picking roller 12 in conjunction with the picking spring teeth 131 to send the residual film and impurities from the field into the film removal area by raking and picking, and separates them in conjunction with the fan 25 and the conveying pipeline 26. It can effectively solve the problems of low residual film pickup rate and high impurity rate in film-soil separation, and greatly improve the residual film pickup rate. At the same time, the device also has the advantages of simple operation and strong adaptability, and can meet the needs of residual film recovery and treatment in agricultural production.

[0045] In the description of the present invention, it should be understood that the terms "upper end", "bottom", "up", "lower", "outer side", "inner side" and the like indicating orientations or positional relationships are based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or mechanism referred to must have a specific orientation, be constructed or operate in a specific orientation, and therefore cannot be understood as a limitation on the present invention; at the same time, in the description of the present invention, the meaning of "at least" includes one, two and more than two.

[0046] In the present invention, unless otherwise clearly specified and limited, the terms "fixed", "connected", "installed", etc. should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, a relatively rotatable connection, or an integral connection, a direct connection, or an indirect connection through an intermediate medium. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0047] The above is only an embodiment of the present invention, and the common knowledge such as the specific structure and characteristics of the scheme is not described in detail here. It should be pointed out that for those skilled in the art, several improvements can be made without departing from the present invention, and these should also be regarded as the scope of protection of the present invention. These will not affect the effect of the implementation of the present invention and the practicality of the patent. The scope of protection required by this application shall be based on the content of the claims, and the specific implementation methods and other records in the description can be used to interpret the content of the claims.

Claims

1. The residual film picking mechanism is characterized by: Include: An active roller (10), the active roller (10) being connected to a transmission mechanism; A lifting roller, comprising a first lifting roller (11) and a second lifting roller (12), wherein the first lifting roller (11) and the second lifting roller (12) are arranged in parallel and are located below the active roller (10) and can contact the ground; A picking belt (13) is provided with picking spring teeth (131) which are wound around the active roller (10), the first picking roller (11) and the second picking roller (12), and a film picking section (132) is formed between the first picking roller (11) and the second picking roller (12), and a film picking section (133) is formed between the active roller (10) and the first picking roller (11).

2. The residual film picking mechanism according to claim 1, characterized in that: The length of the picking spring teeth (131) is 145-155 mm, and the interval between two adjacent picking spring teeth (131) is 38-42 mm.

3. The residual film picking mechanism according to claim 1, characterized in that: The axis connecting the active roller (10), the first picking roller (11) and the second picking roller (12) forms an obtuse triangle.

4. The residual film picking mechanism according to claim 1, characterized in that: The axes of the first hugging roller (11) and the second hugging roller (12) are located in the same horizontal plane, or the axis of the first hugging roller (11) is higher than the axis of the second hugging roller (12) to form a hugging inclination angle.

5. The residual film picking mechanism according to claim 1, characterized in that: It comprises a rake frame (21), wherein the active roller (10), the first picking roller (11) and the second picking roller (12) are all pivotally connected to corresponding positions of the rake frame (21).

6. A combined scooping and picking type pre-sowing residual film recovery device, comprising a frame (20), characterized in that: The frame (20) is provided with a film collecting box (23), a film-soil separation mechanism and the residual film picking mechanism described in any one of claims 1 to 5 in sequence from front to back; the film inlet of the film collecting box (23) is located on the opposite side of the film-soil separation mechanism, and the film-soil separation mechanism comprises a debris removal auger (24), a wind separation component and a film stripping component, the debris removal auger (24) is located between the film inlet of the film collecting box (23) and the wind separation component, and the film stripping component is located above the debris removal auger (24).

7. The device for recovering residual film before sowing by combining scooping and lifting according to claim 6 is characterized in that: The demolding assembly is fixed on the rake frame (21) of the residual film picking mechanism, and comprises a demolding scraper group (27) and a comb tooth group (28). The demolding scraper group (27) is arranged above the comb tooth group (28). The demolding scraper group (27) is arranged opposite to the picking spring teeth (131) and can change the airflow direction of the wind separation assembly to the film inlet side of the film collecting box (23). The comb tooth group (28) is located above the impurity removal auger (24) and is arranged opposite to the film inlet of the film collecting box (23).

8. The device for recovering residual film before sowing by combining scooping and lifting according to claim 6 is characterized in that: The wind separation component comprises a fan (25) and a conveying pipeline (26); the conveying pipeline (26) is connected to the fan (25) and is located below the debris removal auger (24).

9. The device for recovering residual film before sowing by combining scooping and lifting according to claim 6 is characterized in that: The film collecting box (23) is fixed to the frame (20) via a support rod and a hydraulic cylinder (29), and one side of the bottom of the film collecting box (23) is pivotally connected to the support rod, and the other side is pivotally connected to the hydraulic cylinder (29). The extension of the hydraulic cylinder (29) can drive the film collecting box (23) to rotate relative to the support rod to dump the residual film.

10. The device for recovering residual film before sowing by combining scooping and lifting according to claim 6 is characterized in that: The frame (20) is provided with a transmission mechanism, which includes a gearbox (30), a transmission chain (31) and a gear set (32). The gearbox (30) is connected to the driving roller (10) and the power shaft of the wind separation component through the transmission chain (31) and the gear set (32) to drive the driving roller (10) and the wind separation component to rotate synchronously.

Images