CN112262625A - Method for realizing extension of mulching film pickup spike teeth, mulching film recycling mechanism and recycling machine - Google Patents
Method for realizing extension of mulching film pickup spike teeth, mulching film recycling mechanism and recycling machine Download PDFInfo
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- CN112262625A CN112262625A CN202011152899.0A CN202011152899A CN112262625A CN 112262625 A CN112262625 A CN 112262625A CN 202011152899 A CN202011152899 A CN 202011152899A CN 112262625 A CN112262625 A CN 112262625A
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- 230000007246 mechanism Effects 0.000 title claims abstract description 58
- 238000004064 recycling Methods 0.000 title claims description 18
- 238000000034 method Methods 0.000 title claims description 14
- 238000011084 recovery Methods 0.000 claims abstract description 34
- 238000005452 bending Methods 0.000 claims abstract description 12
- 239000012528 membrane Substances 0.000 claims description 28
- 239000002985 plastic film Substances 0.000 claims description 21
- 229920006255 plastic film Polymers 0.000 claims description 21
- 239000002362 mulch Substances 0.000 claims description 13
- 230000005484 gravity Effects 0.000 claims description 6
- 238000004140 cleaning Methods 0.000 abstract description 6
- 230000005540 biological transmission Effects 0.000 abstract description 4
- 238000003306 harvesting Methods 0.000 abstract description 3
- 239000012634 fragment Substances 0.000 abstract description 2
- 238000009960 carding Methods 0.000 description 6
- 230000000694 effects Effects 0.000 description 3
- 241000555745 Sciuridae Species 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 238000009434 installation Methods 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- 238000007790 scraping Methods 0.000 description 2
- 235000010585 Ammi visnaga Nutrition 0.000 description 1
- 244000153158 Ammi visnaga Species 0.000 description 1
- 230000003139 buffering effect Effects 0.000 description 1
- 230000015556 catabolic process Effects 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 210000001520 comb Anatomy 0.000 description 1
- 238000006731 degradation reaction Methods 0.000 description 1
- 230000032258 transport Effects 0.000 description 1
- 238000004804 winding Methods 0.000 description 1
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- A—HUMAN NECESSITIES
- A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
- A01B—SOIL WORKING IN AGRICULTURE OR FORESTRY; PARTS, DETAILS, OR ACCESSORIES OF AGRICULTURAL MACHINES OR IMPLEMENTS, IN GENERAL
- A01B43/00—Gatherers for removing stones, undesirable roots or the like from the soil, e.g. tractor-drawn rakes
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- Life Sciences & Earth Sciences (AREA)
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- Mechanical Engineering (AREA)
- Soil Sciences (AREA)
- Environmental Sciences (AREA)
- Separation, Recovery Or Treatment Of Waste Materials Containing Plastics (AREA)
Abstract
The invention discloses a mulching film recovery mechanism, a mulching film recovery machine and a mulching film recovery machine, wherein the mulching film recovery mechanism comprises a rack (1), a transmission mechanism (7) and a film collection roller (3), the film collection roller is in a squirrel-cage shape formed by a baffle (32) and an end plate (31), film collection row teeth (4) are arranged on the end plate (31), bending parts (45) and guide blocks (46) are arranged on the film collection row teeth, a guide rail (8) is arranged on the rack (1), and a film stripping plate (2) is arranged outside the upper part of the film collection roller (3). The mulching film recovery mechanism can further form various mulching film recovery machines, is not only suitable for picking, cleaning and recovering the residual mulching film, but also can be applied to machinery for intensively recovering the mulching film in the middle and later periods of crop planting after harvesting to assist in cleaning or pick up residual mulching film fragments. Compared with the prior art, the invention has the advantages of simpler structure, reliable work, low failure rate and high picking and stripping efficiency.
Description
Technical Field
The invention belongs to the technical field of agricultural machinery, and particularly relates to a method for stretching mulching film pickup spike teeth of a mulching film pickup roller in a mulching film recovery mechanism, and the mulching film recovery mechanism and a mulching film recovery machine formed by the method.
Background
In recent years, the rapid popularization of mulching films remarkably promotes the development of agriculture in China, and meanwhile, the residue problem of agricultural mulching films is becoming more serious due to the difficult degradation of the mulching films, the incomplete recovery mechanism and the like.
In order to solve the problem of serious white pollution caused by the increase of the usage amount of the mulching film, more and more people begin to develop and research machinery in the residual film recovery aspect so as to solve the problems of low manual recovery efficiency, high labor intensity and high cost.
At present, the mulching film recovery machine mainly performs centralized recovery on mulching films in the middle and later periods of crop planting-after harvesting, and particularly performs recovery before plowing. Representative examples are: the mulching film recycling machine disclosed in CN106034423A, CN108476621A and CN108076696A is used for removing and recycling the whole mulching film. The mulching film recycling operation machines disclosed in CN105230248A, CN209731950U, CN206674457U and CN2110339U rake the whole mulching film into piles or rows, and then perform centralized cleaning and recycling.
Foretell recovery machine can retrieve most plastic films, and recovery efficiency is high.
However, the thickness of the mulching films used in China is 0.006 mm-0.014 mm at present, the tensile strength of the mulching films is low during recycling, the mulching films are often seriously damaged during recycling, or the mulching films are broken and difficult to recycle in the process of recycling the mulching films by a mulching film recycling machine, the broken mulching films are left in the field, the field is accumulated for a long time, a large amount of residues are caused, and the normal growth of crops is seriously influenced.
Therefore, a machine for recovering ground mulch remaining in a field is another large type of mulch retriever. The mulch film recycling device typically disclosed in CN209299672U and CN204907007U picks up or combs up the broken mulch film in the ground by means of finger-shaped pickup spikes densely distributed on the surface of the drum.
However, the picking mechanism of the type can cause the phenomenon that the broken mulching films are wound around the nail teeth after working for a certain time, and the picking mechanism can work smoothly only by cleaning regularly.
CN210959352U, CN209482898U, CN201986357U then disclose a pick up spike tooth telescopic pickup mechanism, through an eccentric or similar mechanism, make pick up when the face of operation contact carding spike tooth pick up the carding spike tooth front end and stretch out the cylinder, when detaching from the contact with the face of operation pick up carding spike tooth then retract the cylinder, pick up when the carding spike tooth is retracting into, pick up carding spike tooth and cylinder surface form the dislocation, realize taking off the winding plastic film residue on the carding spike tooth of will picking up.
The structure that this kind of eccentric or similar mechanism realized is too complicated, leads to cost and fault rate all higher, especially picks up the spike tooth and is straight from top to bottom at flexible in-process, realizes the flexible of spike tooth, and the spike tooth is unchangeable with the angle of picking up between the cylinder wall, leads to picking up the effect relatively poor.
In order to solve the problems, a method for stretching mulching film pickup spike teeth of a mulching film pickup roller in a mulching film recovery mechanism, the mulching film recovery mechanism formed by the method and the mulching film recovery mechanism for realizing the method are produced.
Disclosure of Invention
The invention aims to provide a method for stretching mulching film pickup spike teeth of a mulching film pickup roller in a mulching film recovery mechanism, the mulching film recovery mechanism and a mulching film recovery machine.
The invention discloses a method for stretching mulching film pickup spike teeth of a mulching film pickup roller in a mulching film recovery mechanism.
Through the method, in the plastic film recovery, when the rotation of the plastic film pickup roller during operation, the plastic film pickup spike teeth can also change in angle with the plastic film pickup roller wall, and the pickup effect of the plastic film pickup spike teeth can be improved to a greater extent.
The mulching film recovery mechanism comprises a rack (1), a transmission mechanism (7) and a film collecting roller (3), and is characterized in that: receive the membrane cylinder contain the cylinder body, cylinder axle (33) and receive membrane row tooth (4), the cylinder body contains end plate (31) of both sides at least, be equipped with baffle (32) between end plate (31) of both sides, this baffle (32) are a plurality of length strip shaped plate between end plate (31), baffle (32) set up on end plate (31) edge a week and constitute the cylinder body of squirrel cage form with end plate (31), be equipped with on a week of end plate (31) between adjacent baffle (32) and receive membrane row tooth mounting hole (34).
Receive membrane row tooth (4) contain spike tooth back shaft (41) and spike tooth (42), spike tooth (42) are arranged on spike tooth back shaft (41) in a row form, spike tooth back shaft (41) are connected on the drum body through receiving membrane row tooth mounting hole (34), be equipped with balance mechanism (44) on spike tooth back shaft (41), this balance mechanism (44) are one of gravity piece or torsion spring on spike tooth back shaft (41) or the combination of gravity piece and torsion spring.
At least one end of the spike tooth support shaft (41) is provided with a crank-shaped bending part (45), the bending part (45) is positioned on the outer side of the end plate (31) on the outermost side of the drum body, the bending part (45) is provided with a guide block (46), the rack (1) is provided with an arc-shaped guide rail (8), and the guide rail (8) is positioned on a track line of the running track of the spike tooth support shaft (41) rotating along with the drum body.
A film removing plate (2) is arranged outside the upper part of the film collecting roller (3), and the film removing plate (2) is an external arc-shaped plate above the film collecting roller (3).
Furthermore, the spike teeth (42) are arranged on the spike tooth supporting shaft (41) through a spike tooth mounting mechanism, the spike tooth mounting mechanism comprises a cylindrical cavity (43), a spring (47) and a spike tooth connecting seat (48) are arranged in the cylindrical cavity (43), the spike tooth connecting seat (48) is a sliding block in the cylindrical cavity (43), the rear end of the spike teeth (42) is connected with the spike tooth connecting seat (48), the front end of the spike teeth (42) penetrates out of the cylindrical cavity (43) and extends to the other side of the spike tooth supporting shaft (41), the spike teeth in operation can have a good buffering effect through the spike tooth mounting mechanism, when the ground surface is hard or meets obstacles such as stones, the spike teeth can be well profiled or buffered, and the occurrence of equipment fault profiling is prevented.
Still further, the guide block (46) is preferably a roller mechanism.
Still further, the stripping plate (2) is preferably provided with a stripping groove (21), and the stripping groove (21) is a groove extending from the front end to the middle part of the stripping plate (2).
Still further, the lower part of the film collecting roller (3) is preferably provided with a film lifting device (5), the film lifting device (5) is a comb-shaped tooth row, the tooth body of the tooth row is arc-shaped, and the front end of the tooth row extends downwards and forwards from the rear part of the film collecting roller (3) to the lower part of the film collecting roller (3).
The mulching film recovery mechanism can further form various mulching film recovery machines, is not only suitable for picking, cleaning and recovering the residual mulching film, but also can be applied to machinery for intensively recovering the mulching film in the middle and later periods of crop planting after harvesting to assist in cleaning or pick up residual mulching film fragments.
The working process and the principle of the mulching film recycling mechanism are as follows: in the plastic film is retrieved, when the plastic film cylinder of picking up gos forward, as shown in A1 arrow direction, the rotation of plastic film cylinder of picking up, as shown in A2 arrow direction, because balance mechanism effect plastic film pick up the spike tooth and be natural state on the plastic film cylinder of picking up, when the place membrane picks up the spike tooth and transports to take off lamina membranacea department along with the plastic film cylinder of picking up, take off the plastic film that the lamina membranacea took up on the spike tooth and take off, when the place membrane picks up the nail and moves to guide rail department, the guide block in the flexion receives the guide rail influence, force to make spike tooth back shaft guide the direction deflection according to the guide rail orbit, the plastic film picks up spike tooth itself when picking up the cylinder pivoted along with the plastic film, also can produce the swing and take place the angle variation with the plastic film and pick up the cylinder wall.
Compared with the prior art, the invention has simpler structure, reliable work and low failure rate, and greatly improves the picking and stripping efficiency.
Drawings
Fig. 1 is a schematic structural view of a mulching film recycling mechanism in embodiment 1 of the present invention.
Fig. 2 is a schematic view of the structure of fig. 1 in the bottom view direction.
Fig. 3 is a schematic structural view taken along a-a in fig. 1.
Fig. 4 is a perspective view of embodiment 1 of the present invention.
Fig. 5 is a schematic structural view of the film collecting row teeth in embodiment 1 of the present invention.
Fig. 6 is a schematic view of the structure in the bottom view of fig. 5.
Fig. 7 is a schematic structural view taken along the line B-B in fig. 5.
Fig. 8 is a schematic structural view of the film collecting row teeth in embodiment 2 of the present invention.
Fig. 9 is a schematic structural view of the film collecting row teeth in embodiment 3 of the present invention.
Fig. 10 is a schematic structural view taken along the line C-C in fig. 9.
FIG. 11 is a schematic structural view of a release sheet in example 4 of the present invention.
FIG. 12 is a schematic structural view showing the operation state of the film removing, collecting and releasing in example 4 of the present invention.
Fig. 13 is a perspective view of embodiment 4 of the present invention.
Fig. 14 is a schematic structural view of the film collecting row teeth in embodiment 5 of the present invention.
Shown in the figure: the film removing device comprises a frame 1, a film removing plate 2, a film removing groove 21, a film collecting roller 3, a roller shaft 33, an end plate 31, a baffle 32, the roller shaft 33, a film collecting row tooth mounting hole 34, a ground scraping tooth 35, a film collecting row tooth 4, a spike tooth support shaft 41, a spike tooth 42, a cylindrical cavity 43, a balance mechanism 44, a bending portion 45, a guide block 46, a spring 47, a spike tooth connecting seat 48, a bending portion 45, a guide block 46, a film lifting device 5, a walking ground wheel 6, a transmission mechanism 7 and a guide rail 8.
Detailed Description
The present invention will now be described in detail with reference to the drawings, which are given by way of illustration and explanation only and should not be construed to limit the scope of the present invention in any way.
Example 1: as shown in fig. 1 to 7, is a schematic structural view of a mulching film recycling mechanism in embodiment 1 of the present invention. In this embodiment, plastic film recovery mechanism includes frame (1), walking land wheel 6, drive mechanism (7) and receipts membrane cylinder (3), and walking land wheel 6 is the cylinder body, and the wheel face gathers there is the spike tooth, acquires power and receives membrane cylinder (3) through the chain transmission from ground in the advancing.
Receive the membrane cylinder contain the drum body and drum shaft (33), the drum body contains circular shape end plate (31) of both sides, this end plate (31) edge is an annular plate body, connect on drum shaft (33) through the support frame, be equipped with baffle (32) between end plate (31), this baffle (32) are a plurality of long strip shaped plate between end plate (31), baffle (32) set up the drum body that constitutes the squirrel cage form with end plate (31) on end plate (31) edge a week, be equipped with on a week of end plate (31) between adjacent baffle (32) and receive membrane row tooth mounting hole (34).
Receive membrane row tooth mounting hole (34) in be equipped with and receive membrane row tooth (4), receipts membrane row tooth (4) contain spike tooth back shaft (41), be equipped with spike tooth (42) that a plurality of roots are row form on spike tooth back shaft (41) side by side, install on spike tooth back shaft (41) spike tooth (42) through spike tooth installation mechanism, spike tooth installation mechanism contains cylindrical cavity (43), is equipped with spring (47) and spike tooth connecting seat (48) in cylindrical cavity (43), spike tooth connecting seat (48) are the slider in cylindrical cavity (43), the rear end of spike tooth (42) connects spike tooth connecting seat (48), and the front end of spike tooth (42) passes spike tooth back shaft (41) to the opposite side of spike tooth back shaft (41) in cylindrical cavity (43).
The spike tooth supporting shaft (41) is provided with a balance mechanism (44), and the balance mechanism (44) is one of a gravity block or a torsion spring on the spike tooth supporting shaft (41) or a combination of the gravity block and the torsion spring.
Both ends of the spike tooth support shaft (41) are provided with bending parts (45), the bending parts (45) are provided with guide blocks (46),
in this embodiment, the balance mechanism (44) is a weight block and is attached to the curved portion (45).
The spike tooth support shaft (41) penetrates through a film collecting row tooth mounting hole (34) on the circumference of the end plate (31), and the bending part (45) is positioned on the outer side of the end plate (31) on the outermost side of the drum body.
The rack (1) is provided with a guide rail (8), and the guide rail (8) is positioned on the locus line of the running locus of the spike-tooth supporting shaft (41) rotating along with the roller body and is in an involute shape which is gradually enlarged.
A film removing plate (2) is arranged outside the upper part of the film collecting roller (3), and the film removing plate (2) is an external arc-shaped plate above the film collecting roller (3).
Receive membrane cylinder (3) lower part be equipped with film-forming device (5), this film-forming device (5) are a pectination row tooth, the tooth body of row tooth is the arc, the tooth front end of row tooth stretches into the lower part of receiving membrane cylinder (3) from receiving membrane cylinder (3) rear portion downwards to the front.
Example 2: referring to fig. 8, which is a schematic structural diagram of embodiment 2 of the present invention, compared with embodiment 1, the present embodiment is different in that: the guide block (46) is a roller mechanism.
Example 3: referring to fig. 9-10, which are schematic structural views of embodiment 3 of the present invention, compared with embodiment 1 or 2, the present embodiment is different in that: the front ends of the spike teeth (42) directly penetrate out of the cylindrical cavity (43), and the spike tooth supporting shaft (41) is connected to the side wall of the cylindrical cavity (43) to form a membrane collecting row tooth (4).
Example 4: referring to fig. 11-13, which are schematic structural views of embodiment 4 of the present invention, compared with the previous embodiments, the present embodiment is different in that: the film removing plate (2) is provided with a film removing groove (21), the film removing groove (21) is a groove extending from the front end of the film removing plate (2) to the middle part, and the film collecting roller (3) is provided with a ground scraping tooth (35).
Example 5: referring to fig. 14, which is a schematic structural diagram of embodiment 5 of the present invention, compared with the previous embodiments, the present embodiment is different in that: the spike teeth (42) are directly mounted on the spike tooth support shaft (41).
The foregoing is only a preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, various changes and modifications can be made without departing from the inventive concept of the present invention, and these changes and modifications are all within the scope of the present invention.
Claims (10)
1. The utility model provides a flexible method of spike tooth is picked up to plastic film of cylinder is picked up to plastic film which characterized in that: the spike teeth for mulching film recovery are arranged on a spike tooth supporting shaft, and the spike teeth and the picking roller wall are changed in angle by rotating the spike tooth supporting shaft, so that the mulching film picking spike teeth stretch out and draw back on the mulching film picking roller body.
2. The utility model provides a mechanism is retrieved to plastic film, includes frame (1), drive mechanism (7) and receipts membrane cylinder (3), its characterized in that:
the film collecting roller comprises a roller body, a roller shaft (33) and film collecting row teeth (4), the roller body at least comprises end plates (31) on two sides, a baffle (32) is arranged between the end plates (31) on the two sides, the baffle (32) is a plurality of long strip-shaped plates between the end plates (31), the baffle (32) is arranged on the periphery of the edge of the end plate (31) and forms a squirrel-cage-shaped roller body with the end plate (31), and a film collecting row tooth mounting hole (34) is formed in the periphery of the end plate (31) between the adjacent baffles (32);
the film collecting row teeth (4) comprise nail tooth supporting shafts (41) and nail teeth (42), the nail teeth (42) are arranged on the nail tooth supporting shafts (41) in a row shape, and the nail tooth supporting shafts (41) are connected to the drum body through film collecting row tooth mounting holes (34);
a balance mechanism (44) is arranged on the spike tooth supporting shaft (41), and the balance mechanism (44) is one of a gravity block or a torsion spring on the spike tooth supporting shaft (41) or a combination of the gravity block and the torsion spring;
at least one end of the spike tooth support shaft (41) is provided with a crank-shaped bending part (45), the bending part (45) is positioned on the outer side of the end plate (31) on the outermost side of the drum body, and the bending part (45) is provided with a guide block (46);
an arc-shaped guide rail (8) is arranged on the frame (1), and the guide rail (8) is positioned on a track line of a running track of the nail tooth support shaft (41) rotating along with the roller body;
a film removing plate (2) is arranged outside the upper part of the film collecting roller (3), and the film removing plate (2) is an external arc-shaped plate above the film collecting roller (3).
3. The mulch recovery mechanism as claimed in claim 1, wherein: the spike teeth (42) are arranged on the spike teeth supporting shaft (41) through a spike teeth mounting mechanism, the spike teeth mounting mechanism comprises a cylindrical cavity (43), a spring (47) and a spike teeth connecting seat (48) are arranged in the cylindrical cavity (43), the spike teeth connecting seat (48) is a sliding block in the cylindrical cavity (43), the rear end of the spike teeth (42) is connected with the spike teeth connecting seat (48), and the front end of the spike teeth (42) penetrates out of the cylindrical cavity (43) and extends to the other side of the spike teeth supporting shaft (41).
4. A mulch retrieval mechanism as claimed in claim 2 or claim 3, wherein: the guide block (46) is a roller mechanism.
5. A mulch retrieval mechanism as claimed in claim 2 or claim 3, wherein: the demoulding plate (2) is provided with a demoulding groove (21), and the demoulding groove (21) is a groove extending from the front end to the middle part of the demoulding plate (2).
6. The mulch recovery mechanism as claimed in claim 4, wherein: the demoulding plate (2) is provided with a demoulding groove (21), and the demoulding groove (21) is a groove extending from the front end to the middle part of the demoulding plate (2).
7. A mulch retrieval mechanism as claimed in claim 2 or claim 3, wherein: receive membrane cylinder (3) lower part be equipped with film-forming device (5), this film-forming device (5) are a pectination row tooth, the tooth body of row tooth is the arc, the tooth front end of row tooth stretches into the lower part of receiving membrane cylinder (3) from receiving membrane cylinder (3) rear portion downwards to the front.
8. The mulch recovery mechanism as claimed in claim 4, wherein: receive membrane cylinder (3) lower part be equipped with film-forming device (5), this film-forming device (5) are a pectination row tooth, the tooth body of row tooth is the arc, the tooth front end of row tooth stretches into the lower part of receiving membrane cylinder (3) from receiving membrane cylinder (3) rear portion downwards to the front.
9. The mulch recovery mechanism as claimed in claim 5, wherein: receive membrane cylinder (3) lower part be equipped with film-forming device (5), this film-forming device (5) are a pectination row tooth, the tooth body of row tooth is the arc, the tooth front end of row tooth stretches into the lower part of receiving membrane cylinder (3) from receiving membrane cylinder (3) rear portion downwards to the front.
10. A mulch film recycling machine characterized in that a mulch film recycling mechanism according to any one of claims 2-9 is provided.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011152899.0A CN112262625A (en) | 2020-10-26 | 2020-10-26 | Method for realizing extension of mulching film pickup spike teeth, mulching film recycling mechanism and recycling machine |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202011152899.0A CN112262625A (en) | 2020-10-26 | 2020-10-26 | Method for realizing extension of mulching film pickup spike teeth, mulching film recycling mechanism and recycling machine |
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| CN202011152899.0A Pending CN112262625A (en) | 2020-10-26 | 2020-10-26 | Method for realizing extension of mulching film pickup spike teeth, mulching film recycling mechanism and recycling machine |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114303481A (en) * | 2021-12-21 | 2022-04-12 | 浙江极智农业开发有限公司 | Plastic film collecting device is used to agricultural |
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| CN209546250U (en) * | 2019-01-24 | 2019-10-29 | 石河子市光大农机有限公司 | A kind of steering film collecting roller and machine for recycling mulch film |
| CN110731131A (en) * | 2019-10-30 | 2020-01-31 | 沙雅钵施然智能农机有限公司 | mulching film recycling machine |
| CN211457904U (en) * | 2019-10-30 | 2020-09-11 | 沙雅钵施然智能农机有限公司 | Machine is retrieved to plastic film |
| CN110651544A (en) * | 2019-10-31 | 2020-01-07 | 湖南农业大学 | Membrane soil separation device for farmland residual membrane recovery |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114303481A (en) * | 2021-12-21 | 2022-04-12 | 浙江极智农业开发有限公司 | Plastic film collecting device is used to agricultural |
| CN114303481B (en) * | 2021-12-21 | 2023-05-30 | 湖州创感科技有限公司 | Agricultural mulching film collecting equipment |
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Application publication date: 20210126 |