A straw returning machine based on ecological planting

Abstract

The present invention relates to the field of straw return to the field, and in particular to a straw return machine based on ecological planting. The technical problem is that the existing straw return equipment is unable to disinfect the insect eggs remaining inside the straw by crushing, resulting in the appearance of insect pests in the soil, and the undried straw fiber has a high strength, and the fibers are easily entangled on the crushing mechanism. The technical solution is: a straw return machine based on ecological planting, including a tractor and a support frame, etc.; the support frame is installed on the right side of the tractor. The present invention intercepts and guides the dust and debris that fly high into the guide cavity through the curved portion, preventing the straw debris that fly high from being mixed with the insecticide liquid, and being unable to disinfect the insect eggs, thereby avoiding the soil from being infested with insects. The insecticide liquid is guided into the guide cavity through the concave curved surface on the upper rear part of the cleaner, thereby improving the mixing effect of the insecticide liquid and the crushed straw, and preventing the insecticide liquid from being unable to be evenly mixed with the straw, resulting in the appearance of insect pests in the soil.

Description

Technical Field

[0001] The invention relates to the field of returning straw to fields, and in particular to a straw returning machine based on ecological planting. Background Art

[0002] Straw return to the field is to crush the crop straw after picking, and bury the debris in the soil after meeting the crushing requirements to improve the fertility of the soil. At the same time, it can also protect crops from freezing in winter. The Chinese patent application number is 202110136877.3, a straw return machine. The device uses the inner cylinder, outer cylinder and turning rod set in the turning unit to adjust the length of the turning rod to meet the requirements of different land plowing depths. It can also be used in conjunction with a baler to complete the straw collection and baling function. However, in the process of burying the straw, the insect eggs remaining in the straw cannot be disinfected by crushing, resulting in the straw with insect eggs being buried in the soil together, causing insect pests in the soil, endangering the growth of the next crop.

[0003] At the same time, during the straw cutting process, the undried straw fibers have a high strength, which causes the fibers to easily entangle in the crushing mechanism during the straw crushing process, making the crushing mechanism unable to operate normally. Summary of the Invention

[0004] In order to overcome the shortcomings of existing straw return equipment that is unable to disinfect the insect eggs remaining inside the straw by crushing them, causing insect pests to appear in the soil, and that the undried straw fibers have high strength and are easily entangled in the crushing mechanism, the present invention provides a straw return machine based on ecological planting.

[0005] The technical solution is: a straw returner based on ecological planting, including a tractor, a support frame and a cover; a support frame is installed on the tractor; a cover is provided on the support frame; it also includes a nozzle, an isolation plate, a cleaner, a return-to-field component and a cutting system; a number of nozzles for spraying insecticide are installed on the inside of the cover; an isolation plate is installed on the inside of the cover to prevent the nozzle from being blocked; a curved portion is provided on the right lower side of the isolation plate; a return-to-field component for crushing and burying straw is provided on the lower inner side of the cover; a cleaner is provided on the inside of the cover to prevent the return-to-field component from being blocked by straw; a number of rectangular grooves are provided on the lower side of the cleaner to avoid the return-to-field component; a guide cavity for the circulation of insecticide is formed between the isolation plate and the cleaner; each nozzle is facing the guide cavity; the lower side of the cleaner is movably connected to the return-to-field component; the cleaner is provided with a cutting system for crushing the straw wrapped around the return-to-field component.

[0006] As an improvement to the above solution, the curved portion is configured as an arc surface that gradually slopes downward from left to right, viewed from the front to the back.

[0007] As an improvement to the above solution, the upper rear portion of the cleaner is configured as a curved surface that is concave to the left side, viewed from the front to the back.

[0008] As an improvement of the above-mentioned scheme, the field returning component includes an electric impeller, a dustproof plate, a crushing roller, a plowing roller and a compacting roller; a number of electric impellers are fixedly connected to the left side of the support frame to guide the straw to move into the cover; the lower front part of the cover is movably connected to a dustproof plate to prevent dust and debris from splashing; the lower inner part of the cover is rotatably connected to a crushing roller for crushing the straw; the lower inner part of the cover is rotatably connected to a plowing roller for turning the soil; the lower inner part of the cover is rotatably connected to a compacting roller for compacting the soil; the crushing roller is located to the left of the compacting roller, and the plowing roller is located between the crushing roller and the compacting roller.

[0009] As an improvement to the above scheme, it also includes a cutting block; a plurality of cutting blocks are installed on the cleaner to cooperate with the field return component to cut straw; based on the view from top to bottom, the lower sides of two adjacent cutting blocks are tilted toward the front and rear sides respectively.

[0010] As an improvement to the above-mentioned scheme, the cutting system includes a movable plate, a top block, a cutter and a first elastic member; several movable plates are slidably connected to the inner side of the cleaner; several top blocks for pushing the movable plate to slide are fixed to the outer surface of the crushing roller; two cutters for crushing fibers accumulated on the cleaner are fixed to the right side of each movable plate; another cutter is provided on the opposite side of the two cutters on each movable plate, and the cutter is fixed to the cleaner; a first elastic member is fixed to the upper side of each movable plate; the end of the first elastic member away from the movable plate is fixed to the cleaner.

[0011] As an improvement to the above solution, the cutter on the movable plate and the cutter on the cleaner are staggered.

[0012] As an improvement to the above solution, it also includes a second elastic member and a guide plate; two second elastic members are fixedly connected to the inner side of the cover shell, which are symmetrical in front and back; the two second elastic members are fixedly connected to the opposite sides with a guide plate that guides debris and dust into the guide cavity, and the upper end of the guide plate is in contact with the lower side of the guide cavity; the guide plate is set to be an arc shape inclined to the left when viewed from the front to the back; the guide plate is located to the right of the crushing roller.

[0013] As an improvement to the above solution, both the upper and lower ends of the guide plate are configured as arc surfaces.

[0014] As an improvement to the above solution, it also includes rubber strips; a plurality of rubber strips for cleaning debris attached to the crushing roller are fixed to the guide plate; a plurality of arc grooves for avoiding the crushing roller are opened on the lower side of the guide plate, and each rubber strip is located in the arc groove.

[0015] The present invention has the following advantages: the invention intercepts and guides the flying dust and debris into the guide cavity through the curved portion, thereby preventing the flying straw debris from mixing with the insecticide and disinfecting the insect eggs, thereby preventing the soil from being damaged by insects;

[0016] The insecticide liquid is guided into the guide cavity through the concave arc surface on the upper rear side of the cleaner, which improves the mixing effect of the insecticide liquid and the crushed straw, and prevents the insecticide liquid from not being evenly mixed with the straw, resulting in insect pests in the soil;

[0017] The inclined structure on the lower side of the cutting block improves the effect of the crushing roller in cutting straw, preventing the straw from being cut to a length that does not meet the burial specifications, resulting in larger soil gaps. At the same time, longer straw decays more slowly, easily competing with crops for nutrients, and thus harming the growth of later crops.

[0018] The cutter on the movable plate and the cutter on the cleaner are staggered to improve the fiber crushing effect of the cutter, prevent insufficient fiber crushing, and ensure that the fiber length meets the burial requirements;

[0019] The arc surfaces provided at the upper and lower ends of the guide plate facilitate the top block to push the lower end of the guide plate. At the same time, during the beating process of the insecticide, the insecticide is guided to splash toward the guide plate to ensure the mixing of the straw and the insecticide.

[0020] When the cutting strip on the crushing roller passes through the arc groove, the rubber strip removes the debris attached to the surface of the cutting strip, preventing a large amount of debris from adhering to the surface of the cutting strip and ensuring the cutting effect of the crushing roller. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 This is a schematic diagram of the three-dimensional structure of the straw return machine based on ecological planting of the present invention;

[0022] Figure 2 This is a schematic diagram of a first partial three-dimensional structure of the present invention;

[0023] Figure 3 It is a partial cross-sectional view of the present invention;

[0024] Figure 4 This is a schematic diagram of a second partial three-dimensional structure of the present invention;

[0025] Figure 5 This is a schematic diagram of the three-dimensional structure of the cutting block of the present invention;

[0026] Figure 6 This is a schematic diagram of a first three-dimensional structure of the cutting system of the present invention;

[0027] Figure 7 This is a schematic diagram of a second three-dimensional structure of the cutting system of the present invention;

[0028] Figure 8 For the present invention Figure 7 A magnified image of the area at center A;

[0029] Figure 9 This is a schematic diagram of a first combined three-dimensional structure of the second elastic member and the guide plate of the present invention;

[0030] Figure 10 This is a schematic diagram of a second combined three-dimensional structure of the second elastic member and the guide plate of the present invention;

[0031] Figure 11 It is a schematic diagram of the three-dimensional structure of the second elastic member, the guide plate and the rubber strip combined according to the present invention.

[0032] The reference numbers in the figure are: 1-tractor, 2-support frame, 3-cover, 4-sprinkler, 5-isolating plate, 5001-bend part, 6-cleaner, 6001-rectangular groove, 6002-guide chamber, 7-cutting block, 101-electric impeller, 102-dustproof plate, 103-servo motor, 104-crushing roller, 105-ploughing roller, 106-compacting roller, 201-movable plate, 202-top block, 203-cutter, 204-first elastic member, 301-second elastic member, 302-guide plate, 30201-arc groove, 303-rubber strip. DETAILED DESCRIPTION

[0033] The following further illustrates the technical solution with reference to specific embodiments. It should be noted that terms such as "up," "down," "left," and "right" used herein to indicate directions refer only to the positions of the structures depicted in the corresponding drawings. Component numbers, such as "first" and "second," are used solely to distinguish the components being described and do not convey any sequential or technical meaning. References to "connected" and "coupled" in this application, unless otherwise specified, include both direct and indirect connections (couplings).

[0034] Example 1

[0035] like Figure 2-Figure 5 As shown, a straw return machine based on ecological planting includes a tractor 1, a support frame 2 and a cover 3; the support frame 2 is installed on the tractor 1; the cover 3 is provided on the support frame 2;

[0036] It also includes a nozzle 4, an isolation plate 5, a cleaner 6, a field returning component and a cutting system; a plurality of nozzles 4 are installed on the upper inner side of the cover 3; an isolation plate 5 is installed in the middle inner side of the cover 3; a curved portion 5001 is provided on the lower right side of the isolation plate 5; a field returning component is provided on the lower inner side of the cover 3; a cleaner 6 is provided in the middle inner side of the cover 3; a plurality of rectangular grooves 6001 are provided on the lower side of the cleaner 6; a guide cavity 6002 is formed between the isolation plate 5 and the cleaner 6; each nozzle 4 is directed towards the guide cavity The guide cavity 6002 sprays the insecticide into the guide cavity 6002 through the nozzle 4, and the guide cavity 6002 guides the insecticide to the returning component to ensure the insecticide effect on the straw; the lower side of the cleaner 6 is movably connected to the returning component; the cleaner 6 is provided with a cutting system; when the returning component breaks the straw, the fiber tissue of the straw is relatively tough because the straw has not been dried in the sun at this time. When the returning component cuts the straw, the fiber tissue in the straw is entangled with the returning component, which will cause the straw to be damaged over time. , causing the straw fibers to block the return-to-field component, and thus causing the return-to-field component to malfunction. In order to prevent this phenomenon from happening, the cleaner 6 is attached to the surface of the return-to-field component. When the fiber is rotated to the right side of the cleaner 6 by the return-to-field component, the cleaner 6 intercepts the fiber, so that the fiber cannot be entangled on the return-to-field component, and then the fiber accumulates on the right side of the cleaner 6. The rectangular groove 6001 opened on the cleaner 6 cooperates with the return-to-field component to crush the fiber intercepted on the right side of the cleaner 6 until the fiber is completely crushed and falls on the soil surface. At the same time, in the process of the return-to-field component crushing the straw, due to the presence of insect eggs inside the straw, insect pests are likely to occur in the soil after the straw is returned to the field, which harms the growth of crops. At this time, the nozzle 4 is used to spray a solution mixed with pesticide and water into the guide cavity 6002, and the guide cavity 6002 is used to mix the insecticide liquid with the crushed straw, and then the return-to-field component is used to bury the mixed straw in the soil, thereby completing the disinfecting of insect eggs in the straw and avoiding insect pests in the soil.

[0037] Based on the view from front to back, the curved portion 5001 is set as an arc surface that gradually tilts downward from left to right. Through this arc surface structure, the dust and debris that fly higher are intercepted and guided to the guide cavity 6002, preventing the straw debris that fly higher from being mixed with the insecticide and unable to disinfect the insect eggs, thereby ensuring the texture of the soil.

[0038] Taking the view from the front to the back as the reference, the upper rear part of the cleaner 6 is set as an arc surface concave to the left side. The insecticide is guided to the guide cavity 6002 through this arc surface structure, thereby improving the mixing effect of the insecticide and the crushed straw, and preventing the insecticide from being unable to mix evenly with the straw, resulting in insect pests in the soil.

[0039] The returning to field component includes an electric impeller 101, a dust plate 102, a crushing roller 104, a plowing roller 105 and a compacting roller 106; at least two electric impellers 101 are fixedly connected to the left side of the support frame 2; the dust plate 102 is movably connected to the lower front side of the cover 3; the crushing roller 104 is rotatably connected to the lower inner side of the cover 3; the plowing roller 105 is rotatably connected to the lower inner side of the cover 3; the compacting roller 106 is rotatably connected to the lower inner side of the cover 3; the crushing roller 104 is located on the left side of the compacting roller 106, and the plowing roller 105 is located between the crushing roller 104 and the compacting roller 106; before the straw is crushed, the straw is scattered on the soil after cutting after the crops are collected, resulting in the crushing roller 104 The crushing effect is poor. At this time, the two electric impellers 101 are used as a reference to look from top to bottom, and the electric impeller 101 at the rear side is controlled to rotate counterclockwise, while the electric impeller 101 at the front side rotates clockwise, thereby driving the straw on the soil surface to be guided into the cover 3. At the same time, the dustproof plate 102 intercepts the dust and debris raised in the process of the crushing roller 104 crushing the straw, thereby reducing the dust phenomenon in the crushing process, and turning up the soil through the plowing roller 105 so that the crushed straw falls into the soil. At the same time, during the movement of the tractor 1, the compacting roller 106 is used to compact the soil so that the crushed straw is buried in the soil, thereby completing the straw return to the field.

[0040] It also includes a cutting block 7; a plurality of cutting blocks 7 are installed on the cleaner 6; with the bottom sides of two adjacent cutting blocks 7 being tilted toward the front and rear sides respectively when viewed from top to bottom; in the process of the crushing roller 104 cutting the straw, the structure of the tilted bottom side of the cutting block 7 is used to cooperate with the crushing roller 104 to improve the effect of the crushing roller 104 in cutting the straw, and prevent the straw cutting length from not meeting the burial specifications, resulting in larger soil gaps. At the same time, the longer straw rots slower, and the microorganisms produced by the rotting straw are likely to compete with crops for nutrients, thereby endangering the growth of crops in the later stage.

[0041] It also includes a servo motor 103; two servo motors 103 are fixedly connected to the lower front part of the cover shell 3; the output end of the servo motor 103 on the left is fixedly connected to the crushing roller 104; the servo motor 103 on the right is fixedly connected to the plowing roller 105; the crushing roller 104 is driven to rotate by the servo motor 103 on the left, thereby achieving straw crushing, and the plowing roller 105 is driven to rotate by the servo motor 103 on the right, thereby achieving soil plowing.

[0042] Example 2

[0043] On the basis of Example 1, Figure 6-Figure 8As shown, the cutting system includes a movable plate 201, a top block 202, a cutter 203 and a first elastic member 204; a plurality of movable plates 201 are slidably connected to the lower inner side of the cleaner 6; a plurality of top blocks 202 are fixed to the outer surface of the crushing roller 104; two cutters 203 are fixed to the right side of each movable plate 201; another cutter 203 is provided on the opposite side of the two cutters 203 on each movable plate 201, and the cutter 203 is fixed to the cleaner 6; each movable plate 201 is fixed on the upper side. A first elastic member 204 is connected, and the first elastic member 204 is a spring; the end of the first elastic member 204 away from the movable plate 201 is fixedly connected to the cleaner 6; when the straw fiber accumulation is intercepted by the cleaner 6, the crushing roller 104 cannot effectively cut the fibers attached to the surface of the crushing roller 104, in order to make the fiber crushing specifications meet the burial requirements, when the crushing roller 104 is rotating and crushing, the crushing effect of the crushing roller 104 is improved by rotating the top block 202, so that the top block 202 can cut the fibers attached to the crushing roller 104. The straw fibers on the surface of the roller 104 are crushed, and the straw fibers that are not completely crushed are pushed to the bottom of the cutter 203. When the top block 202 rotates to the bottom of the cutter 203, the top block 202 is used to push the movable plate 201 upward, so that the movable plate 201 drives the cutter 203 to move upward, thereby squeezing the first elastic member 204. When the top block 202 is separated from the cutter 203, the first elastic member 204 drives the movable plate 201 and the cutter 203 to rebound to the initial position, thereby achieving the cutter 203. 3. The reciprocating motion of the cutter 203 and the rotation of the top block 202 cooperate to crush the fibers attached to the surface of the crushing roller 104 for a second time, thereby improving the effect of crushing the straw fibers. When the top block 202 is separated from the movable plate 201, the first elastic member 204 loses its squeezing force and drives the movable plate 201 back to its initial state. The reciprocating motion is used to cut the fibers, preventing insufficiently crushed fibers from being buried in the soil, which would increase the soil gap and ensure the soil moisture retention capacity after returning the straw to the field.

[0044] The cutter 203 on the movable plate 201 and the cutter 203 on the cleaner 6 are staggered. The staggered cutters 203 improve the fiber crushing effect of the cutter 203, prevent insufficient fiber crushing, and ensure that the fiber crushing degree meets the burial requirements.

[0045] Example 3

[0046] On the basis of Examples 1 and 2, Figure 1 、 Figure 2 and Figures 9-11As shown, it also includes a second elastic member 301 and a guide plate 302; two second elastic members 301 symmetrically connected to the inner lower part of the cover 3 are fixedly connected, and the second elastic member 301 is a torsion spring; the two second elastic members 301 are fixedly connected to the guide plate 302 on the opposite sides, and the upper end of the guide plate 302 is in contact with the lower side of the guide cavity 6002; based on the front and back view, the guide plate 302 is set to an arc shape inclined to the left, and the dust and debris are intercepted by the arc structure, and the dust and debris are guided into the guide cavity 6002 to ensure that the straw debris is fully mixed with the killing powder. The guide plate 302 is located on the right side of the crushing roller 104; in the process of crushing the straw, the crushing roller 104 rotates counterclockwise, and the airflow generated by the rotation of the crushing roller 104 drives the lighter debris and dust to the left side of the crushing roller 104, thereby preventing the straw debris from being fully mixed with the insecticide, resulting in the appearance of insect pests in the soil. In order to prevent this phenomenon from happening, the arc-shaped guide plate 302 is used to intercept the debris and dust driven by the rotation of the crushing roller 104. At the same time, the arc-shaped guide plate 302 is used to guide the dust and debris upward to ensure that the debris is fully mixed with the insecticide, preventing insect eggs from harming the soil and preventing dust from splashing and polluting the air. At this time, when the crushing roller 104 is rotating, the top block 202 is used to push the lower side of the guide plate 302, so that the lower side of the guide plate 302 rotates to the right with the center of the second elastic member 301 as the rotation point, and at the same time, the upper side of the guide plate 302 moves downward. At this time, the insecticide passes through the upper arc structure of the cleaner 6 and the arc surface of the guide plate 302 to form an S shape, further mixing the insecticide with the debris. Mixing, at the same time, when the top block 202 is separated from the guide plate 302, the second elastic member 301 loses the squeezing force of the top block 202, driving the guide plate 302 back to the initial position. At this time, the upper side of the guide plate 302 and the arc-shaped structure of the cleaner 6 are staggered, so that when the insecticide passes through the upper side of the guide plate 302, it is hit by the rebound of the guide plate 302, causing the insecticide to splash, thereby making the insecticide more evenly dispersed, increasing the contact area between the insecticide and the straw, improving the insecticidal effect of the insecticide on the straw, preventing the insecticide from being unable to fully mix with the straw, and avoiding the soil from being infested with insects.

[0047] The upper and lower ends of the guide plate 302 are both set to arc surfaces. The arc surface structure of the lower end of the guide plate 302 facilitates the top block 202 to push the lower end of the guide plate 302. At the same time, the arc surface structure of the upper end of the guide plate 302 is used to guide the insecticide to splash to one side of the guide plate 302 during the process of slapping the insecticide, thereby ensuring the mixing effect of the straw and the insecticide.

[0048] It also includes a rubber strip 303; a plurality of rubber strips 303 are fixed on the guide plate 302; a plurality of arc grooves 30201 are opened on the lower side of the guide plate 302, and each rubber strip 303 is located in the arc groove 30201; in the process of the crushing roller 104 cutting the straw, especially in the process of crushing the moisture-containing straw, the cutting strip fixed on the surface of the crushing roller 104 is prone to adhere to debris. Over time, the crushing effect of the crushing roller 104 on the straw is reduced, resulting in the straw crushing specifications not meeting the burial requirements. In order to solve this problem, the rubber strip 303 is arranged in the arc groove 30201. When the cutting strip on the crushing roller 104 passes through the arc groove 30201, the rubber strip 303 is used to remove the debris attached to the surface of the cutting strip, thereby ensuring the cutting effect of the crushing roller 104.

[0049] While embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes may be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A straw return machine based on ecological planting, comprising a tractor (1), a support frame (2) and a cover (3); the tractor (1) is mounted with the support frame (2); the support frame (2) is provided with the cover (3); the feature is that: The invention also includes a nozzle (4), an isolation plate (5), a cleaner (6), a field return component and a cutting system; a plurality of nozzles (4) for spraying insecticide are installed on the inner side of the cover (3); an isolation plate (5) for preventing the nozzles (4) from being blocked is installed on the inner side of the cover (3); a curved portion (5001) is provided on the lower right side of the isolation plate (5); a field return component for crushing and burying straw is provided on the lower inner side of the cover (3); a cleaner (6) for preventing the field return component from being blocked by straw is provided on the inner side of the cover (3); a plurality of rectangular grooves (6001) for avoiding the field return component are provided on the lower side of the cleaner (6); a guide cavity (6002) for circulating insecticide is formed between the isolation plate (5) and the cleaner (6); each nozzle (4) is directed toward the guide cavity (6002); the lower side of the cleaner (6) is movably connected to the field return component; and a cutting system for crushing straw wound around the field return component is provided on the cleaner (6); The returning-to-soil component comprises an electric impeller (101), a dustproof plate (102), a crushing roller (104), a plowing roller (105) and a compacting roller (106); a plurality of electric impellers (101) for guiding the straw to move into the cover (3) are fixedly connected to the left side of the support frame (2); a dustproof plate (102) for preventing dust and debris from splashing is movably connected to the lower front side of the cover (3); a crushing roller (104) for crushing the straw is rotatably connected to the lower inner side of the cover (3); a plowing roller (105) for turning the soil is rotatably connected to the lower inner side of the cover (3); a compacting roller (106) for compacting the soil is rotatably connected to the lower inner side of the cover (3); the crushing roller (104) is located to the left of the compacting roller (106), and the plowing roller (105) is located between the crushing roller (104) and the compacting roller (106); The cutting system comprises a movable plate (201), a top block (202), a cutter (203) and a first elastic member (204); a plurality of movable plates (201) are slidably connected to the inner side of the cleaner (6); a plurality of top blocks (202) for pushing the movable plates (201) to slide are fixedly connected to the outer surface of the crushing roller (104); two cutters (203) for crushing fibers accumulated on the cleaner (6) are fixedly connected to the right side of each movable plate (201); another cutter (203) is provided on the opposite side of the two cutters (203) on each movable plate (201), and the cutter (203) is fixedly connected to the cleaner (6); a first elastic member (204) is fixedly connected to the upper side of each movable plate (201); and an end of the first elastic member (204) away from the movable plate (201) is fixedly connected to the cleaner (6).

2. The straw return machine based on ecological planting according to claim 1 is characterized in that: Based on the view from the front to the back, the curved portion (5001) is configured as a curved surface that gradually slopes downward from left to right.

3. The straw return machine based on ecological planting according to claim 1 is characterized in that: Based on the view from the front to the back, the upper rear portion of the cleaner (6) is configured as a curved surface that is concave toward the left side.

4. The straw return machine based on ecological planting according to claim 3 is characterized in that: It also includes a cutting block (7); a plurality of cutting blocks (7) are mounted on the cleaner (6) to cooperate with the returning to field assembly to cut the straw; and the lower sides of two adjacent cutting blocks (7) are tilted toward the front and rear sides, respectively, when viewed from above.

5. The straw return machine based on ecological planting according to claim 4 is characterized in that: The cutter (203) on the movable plate (201) and the cutter (203) on the cleaner (6) are arranged in a staggered manner.

6. The straw return machine based on ecological planting according to claim 4 is characterized in that: The invention also includes a second elastic member (301) and a guide plate (302); two second elastic members (301) are fixedly connected to the inner side of the cover shell (3) in a front-to-back symmetrical manner; the two second elastic members (301) are fixedly connected to the guide plate (302) on the opposite sides thereof, which guides debris and dust into the guide cavity (6002), and the upper end of the guide plate (302) contacts the lower side of the guide cavity (6002); the guide plate (302) is arranged in an arc shape inclined to the left side when viewed from the front to the back; the guide plate (302) is located to the right of the crushing roller (104).

7. The straw return machine based on ecological planting according to claim 6 is characterized in that: The upper end and the lower end of the guide plate (302) are both configured as arc surfaces.

8. The straw return machine based on ecological planting according to claim 7 is characterized in that: It also includes a rubber strip (303); a plurality of rubber strips (303) are fixedly connected to the guide plate (302) for cleaning debris attached to the crushing roller (104); a plurality of arc-shaped grooves (30201) for avoiding the crushing roller (104) are opened on the lower side of the guide plate (302), and each rubber strip (303) is located in the arc-shaped groove (30201).

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