Straw field returning machine

Abstract

The utility model relates to agricultural production technical field discloses a kind of straw machine, including main rotating motor, the front side of main rotating motor is provided with auxiliary rotating motor, the right side of main rotating motor is provided with still field mechanism, and the still field mechanism is used to crush and still field with big piece of straw with soil, the right side of auxiliary rotating motor is provided with stubble-removing mechanism, and the stubble-removing mechanism is used to preliminary stubble-removing soil loosening, subsequent crushing processing is convenient, and the still field mechanism includes side rotary disc, the left side of side rotary disc is fixedly connected in the output end of main rotating motor, the outer wall right side of side rotary disc is rotatably connected with front transmission belt, and the front side of front transmission belt is rotatably connected with front rotary disc.In the utility model, the surface layer soil attached with straw residue can be scraped out by the soil scraping knife of soil scraping mechanism, and the straw residue in mixture can be crushed by rolling roller, so that the degradation speed of straw in soil is accelerated.

Description

Technical Field

[0001] This utility model relates to the field of agricultural production technology, and in particular to a straw returning machine. Background Technology

[0002] Straw return machines are specialized mechanical equipment used in agricultural production to process crop straw residues left in the field after harvest. They consist of a power transmission system, straw cutting device, crushing mechanism, spreading components, and support structure. The equipment is connected to the power machinery and can move and operate in the field to process corn stalks, wheat stalks, and crop stems left in the farmland after harvest. It is one of the key pieces of equipment for realizing the resource utilization of straw and the ecological cycle of farmland.

[0003] In modern agricultural production, straw returning machines can directly crush residual straw in the field and evenly spread it onto the soil surface, avoiding air pollution caused by straw burning. This meets the requirements of environmental protection and green agricultural development. After being crushed, the straw degrades in the soil and can be converted into organic matter, improving soil fertility, improving soil structure, and reducing the amount of chemical fertilizer used. Straw returning operations can also eliminate the need for manual straw cleaning, reduce the labor intensity of farmers, and shorten the preparation time from harvest to the next round of sowing.

[0004] While existing straw returning machines on the market can meet basic operational needs when processing straw of standard size, they struggle to thoroughly handle large straw residues. Large straw residues refer to the thick stem bases, root connections, and whole, robust straws missed by harvesting machinery after crop harvesting. Most existing straw returning machines use fixed-speed cutting blades, whose cutting force and crushing efficiency are insufficient to effectively handle these large straw residues. This results in a large number of insufficiently crushed straw fragments remaining in the field after processing. These insufficiently crushed straws degrade slowly in the soil, affecting soil evenness for subsequent sowing operations and prolonging the soil nutrient release cycle. Consequently, preparation time for the next planting cycle increases, failing to meet the demands of modern agricultural production for efficient straw processing. Utility Model Content

[0005] To overcome the above shortcomings, this utility model provides a straw returning machine, which aims to improve the problem that existing technologies have difficulty in handling large straw residues, leading to reduced subsequent conversion efficiency.

[0006] To achieve the above objectives, the present invention adopts the following technical solution: a straw returning machine, including a main rotary motor, an auxiliary rotary motor is provided on the front side of the main rotary motor, a returning mechanism is provided on the right side of the main rotary motor, the returning mechanism is used to crush large pieces of straw with soil and return them to the field, and a stubble-removing mechanism is provided on the right side of the auxiliary rotary motor, the stubble-removing mechanism is used for preliminary stubble removal and soil loosening to facilitate subsequent crushing processing; The soil returning mechanism includes a side rotating disk. The left side of the side rotating disk is fixedly connected to the output end of the main rotating motor. A front drive belt is rotatably connected to the right side of the outer wall of the side rotating disk. A front rotating disk is rotatably connected to the front side of the front drive belt. A soil-scraping component is provided on the right side of the front rotating disk. A rear drive belt is rotatably connected to the left side of the outer wall of the side rotating disk. A conveying mechanism is provided on the rear side of the rear drive belt. A rear connecting frame is provided on the rear side of the main rotating motor. A rear power motor is fixedly connected to the left side of the rear connecting frame. A crushing component is provided on the right side of the rear power motor.

[0007] As a further description of the above technical solution: The stubble-clearing mechanism includes a side protective shell. The left side of the side protective shell is fixedly connected to the right side of the auxiliary rotary motor. A front connecting frame is fixedly connected to the right side of the side protective shell. A soil loosening component is provided at the output end of the auxiliary rotary motor. A front connecting plate is fixedly connected to the front side of the front connecting frame. A front support wheel is rotatably connected to the bottom of the front side of the front connecting frame. A compaction component is provided on the front side of the front connecting plate.

[0008] As a further description of the above technical solution: The soil-scraping assembly includes a front rotating shaft, the left side of which is fixedly connected to the right side of the front rotating disk, and multiple soil-scraping blades are fixedly connected to the outer wall of the front rotating shaft.

[0009] As a further description of the above technical solution: The conveying mechanism includes a rear rotating shaft, the left side of which is rotatably connected to the rear side of the rear drive belt, and the bottom of which is rotatably connected to a conveyor bed.

[0010] As a further description of the above technical solution: The crushing assembly includes a main crushing roller, the left side of which is fixedly connected to the right side of the rear power motor, and an auxiliary crushing roller is rotatably connected to the rear side of the main crushing roller.

[0011] As a further description of the above technical solution: The soil loosening assembly includes a rear rotating shaft, the left side of which is rotatably connected to the right side of the side protective shell, and a soil loosening roller is fixedly connected to the outer wall of the rear rotating shaft.

[0012] As a further description of the above technical solution: The compaction assembly includes a front rotating shaft, the right side of which is rotatably connected to the left side of the front support wheel, and multiple compaction blades are fixedly connected to the outer wall of the front rotating shaft.

[0013] As a further description of the above technical solution: The bottom of the main rotary motor is provided with a side connecting shaft, and the outer wall of the side connecting shaft is fixedly connected with an anti-slip wheel.

[0014] This utility model has the following beneficial effects: 1. In this utility model, the device is equipped with a soil-scraping mechanism and a rolling roller in the middle, and is powered by a rotary motor. During operation, the soil-scraping blade of the soil-scraping mechanism can accurately scrape off the surface soil with straw residue attached, avoiding the problem of omissions caused by incomplete separation of straw and soil. The soil and straw mixture is then smoothly transported to the rolling roller at the rear through a conveyor bed. The rolling roller can strongly squeeze and crush the large straw residues in the mixture, breaking them down into smaller segments that are easier to degrade. This allows the crushed straw to fully contact the soil, accelerating the degradation rate of straw in the soil, improving the conversion efficiency of organic matter, creating favorable conditions for the rapid accumulation of nutrients in the soil, and effectively shortening the preparation time for the next planting cycle.

[0015] 2. In this utility model, a soil loosening mechanism is provided on the front side of the device. The soil loosening roller can be used to loosen the soil layer in the field in advance. During the movement of the equipment, the soil loosening roller can penetrate into the soil surface, break the soil compaction structure, and loosen the compacted soil layer. At the same time, it can turn small straw residues hidden in the soil to the surface. This pretreatment method can reduce the resistance of the subsequent soil-digging mechanism, reduce the power consumption of the equipment, and extend the service life of the components. The loosened soil layer makes it easier for the subsequent soil-digging mechanism to accurately grab the soil with straw residues, and can also make the crushed straw more evenly mixed into the soil, further improving the quality of straw return to the field and laying a good foundation for subsequent sowing operations. Attached Figure Description

[0016] Figure 1 This is a three-dimensional view of a straw returning machine proposed in this utility model.

[0017] Figure 2 This is a left view of a straw returning machine proposed in this utility model.

[0018] Figure 3 This is a schematic diagram of the straw returning mechanism in a straw returning machine proposed in this utility model.

[0019] Figure 4 This is a structural breakdown diagram of the straw returning mechanism in a straw returning machine proposed in this utility model.

[0020] Figure 5 This is a schematic diagram of the stubble-killing mechanism in a straw returning machine proposed in this utility model.

[0021] Legend: 1. Main rotary motor; 2. Auxiliary rotary motor; 3. Returning soil mechanism; 31. Side rotating disk; 32. Front drive belt; 33. Front rotating disk; 34. Soil-scraping assembly; 341. Front rotating shaft; 342. Soil-scraping blade; 35. Rear drive belt; 36. Conveying mechanism; 361. Rear rotating shaft; 362. Conveying bed; 37. Rear connecting frame; 38. Rear power motor; 39. Crushing assembly; 391. Main crushing roller; 392. Auxiliary crushing roller; 4. Stubble-removing mechanism; 41. Side protective shell; 42. Front connecting frame; 43. Soil-loosening assembly; 431. Rear rotating shaft; 432. Soil-loosening roller; 44. Front connecting plate; 45. Front support wheel; 46. Compactor assembly; 461. Front rotating shaft; 462. Compactor blade; 5. Side connecting shaft; 6. Anti-slip wheel. Detailed Implementation

[0022] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0023] Reference Figures 3-4 The present invention provides an embodiment of a straw returning machine, including a main rotary motor 1, an auxiliary rotary motor 2 arranged in front of the main rotary motor 1, a returning mechanism 3 arranged on the right side of the main rotary motor 1, the returning mechanism 3 being used to crush large pieces of straw with soil and return them to the field, and a stubble-killing mechanism 4 arranged on the right side of the auxiliary rotary motor 2, the stubble-killing mechanism 4 being used for preliminary stubble-killing and soil loosening to facilitate subsequent crushing processing. The field-returning mechanism 3 includes a side rotating disk 31. The left side of the side rotating disk 31 is fixedly connected to the output end of the main rotating motor 1. The right side of the outer wall of the side rotating disk 31 is rotatably connected to a front transmission belt 32. The front side of the front transmission belt 32 is rotatably connected to a front rotating disk 33. The right side of the front rotating disk 33 is provided with a soil-scraping component 34. The left side of the outer wall of the side rotating disk 31 is rotatably connected to a rear transmission belt 35. The rear side of the rear transmission belt 35 is provided with a conveying mechanism 36. The rear side of the main rotating motor 1 is provided with a rear connecting frame 37. The left side of the rear connecting frame 37 is fixedly connected to a rear power motor 38. The right side of the rear power motor 38 is provided with a crushing component 39. Specifically, this straw returning machine relies on the main rotary motor 1 to drive the straw returning mechanism 3 and the auxiliary rotary motor 2 to drive the stubble-killing mechanism 4. The two work together to complete the straw returning operation. The main rotary motor 1 is an agricultural motor with a rated power of 2.2KW, a speed of 2800r / min, and a rated voltage of 220V. It is compatible with rigid base installation and can cope with dusty field environments. In the field-returning mechanism 3, the side rotating disk 31 serves as a key node for power transmission. Its left side is directly connected to the output end of the main rotating motor 1. The rotational torque generated by the main rotating motor 1 after startup can directly act on the side rotating disk 31, causing it to rotate synchronously. The right side of the outer wall of the side rotating disk 31 forms a power transmission connection with the front transmission belt 32. When the side rotating disk 31 rotates, the friction between its outer wall and the front transmission belt 32 drives the front transmission belt 32 to rotate, and the front transmission belt 32 transmits the rotational power of the side rotating disk 31 to the front rotating disk 32. The rotating disc 33 enables the front rotating disc 33 to rotate in the same direction as the side rotating disc 31. The soil-scraping component 34 on the right side of the front rotating disc 33 is linked to the front rotating disc 33. The rotation of the front rotating disc 33 is directly converted into the working power of the soil-scraping component 34. Under the action of this power, the soil-scraping component 34 can be inserted into the soil layer in the field to loosen the soil and preliminarily sort and gather the scattered straw in the field, so as to avoid the straw from being dispersed in the subsequent processing and lay the foundation for the efficient operation of the subsequent crushing component 39. The left side of the outer wall of the side rotating disk 31 also forms a power transmission relationship with the rear transmission belt 35. When the side rotating disk 31 rotates, its left outer wall generates a driving force on the rear transmission belt 35, causing the rear transmission belt 35 to run along the tangential direction of the side rotating disk 31. The rear transmission belt 35 transmits power to the rear transmission mechanism 36, and the transmission mechanism 36 starts to operate under the action of power. The working area of ​​the conveying mechanism 36 is connected to the working area of ​​the soil-scraping component 34. The soil and straw after the preliminary treatment by the soil-scraping component 34 can fall directly into the conveying path of the conveying mechanism 36. The conveying mechanism 36 stably conveys these materials to the working area of ​​the crushing component 39 through its own operation, ensuring that the materials can enter the subsequent crushing stage in an orderly and continuous manner, and avoiding the impact on the overall work efficiency due to interruption of material conveying. The rear connecting frame 37 on the rear side of the main rotary motor 1 is fixed relative to the main rotary motor 1. Its structural design can be adapted to the rear installation space of the main rotary motor 1. The left side of the rear connecting frame 37 is directly connected to the rear power motor 38, providing a stable installation reference for the rear power motor 38 and preventing the rear power motor 38 from shifting its position due to vibration during operation, thus ensuring the working stability of the rear power motor 38. After the rear power motor 38 is started, the rotational power generated at its output end directly acts on the crushing component 39 on the right side, providing continuous working power for the crushing component 39. The working position of the crushing component 39 corresponds to the output end of the conveying mechanism 36. The material conveyed by the conveying mechanism 36 can directly enter the processing chamber of the crushing component 39. Under the action of power, the crushing component 39 cuts, squeezes and crushes the large pieces of straw in the material through the high-speed rotation of its internal components, breaking them down into small fragments that meet the requirements for returning to the field. At the same time, it enables the straw and soil to be fully mixed, ultimately achieving the effect of crushing and returning large pieces of straw with soil to the field.

[0024] Reference Figures 4-5 The stubble-clearing mechanism 4 includes a side protective shell 41. The left side of the side protective shell 41 is fixedly connected to the right side of the auxiliary rotary motor 2. The right side of the side protective shell 41 is fixedly connected to a front connecting frame 42. The output end of the auxiliary rotary motor 2 is provided with a soil loosening component 43. The front side of the front connecting frame 42 is fixedly connected to a front connecting piece 44. The bottom front side of the front connecting frame 42 is rotatably connected to a front support wheel 45. The front side of the front connecting piece 44 is provided with a compaction component 46. Specifically, in the stubble-clearing mechanism 4, the left side of the side protective shell 41 is connected to the right side of the auxiliary rotary motor 2. The side protective shell 41 can protect the output end of the auxiliary rotary motor 2 and surrounding components, preventing soil, straw fragments and debris from directly contacting the output end of the auxiliary rotary motor 2 during operation, thus ensuring the stability of the power output of the auxiliary rotary motor 2. The right side of the side protective shell 41 is fixed to the front connecting frame 42. Through the connecting action of the side protective shell 41, the front connecting frame 42 can maintain a relatively fixed positional relationship with the auxiliary rotary motor 2, providing a stable support foundation for the components installed on the front connecting frame 42. The output end of the auxiliary rotary motor 2 is equipped with a soil loosening component 43. The rotational power generated by the auxiliary rotary motor 2 after starting can be directly transmitted to the soil loosening component 43, driving the soil loosening component 43 to rotate. During the rotation process, the soil loosening component 43 can be inserted into the surface soil of the field to loosen the soil and separate the crop stubble roots remaining in the field from the soil, so that the stubble roots are freed from the soil. The working range of the soil loosening component 43 matches the protection range of the side protective shell 41. The side protective shell 41 can prevent soil particles splashed by the soil loosening component 43 from spreading towards the auxiliary rotary motor 2 during operation, reducing the interference of debris on the auxiliary rotary motor 2 and ensuring the continuous and stable operation of the soil loosening component 43. The front connecting frame 42 is fixed to the front connecting piece 44 on the front side. The front connecting frame 42 provides an installation carrier for the front connecting piece 44, so that the front connecting piece 44 can be stably fixed on the front connecting frame 42. The bottom front side of the front connecting frame 42 is rotatably connected to the front support wheel 45. The front support wheel 45 can roll along the field ground. When the front connecting frame 42 moves with the straw returning machine as a whole, the front support wheel 45 supports the front weight of the front connecting frame 42 by rolling, reducing the pressure of the front connecting frame 42 on the soil below, preventing the front connecting frame 42 from sinking into the soil due to its own weight and affecting the operation. At the same time, it keeps the front connecting frame 42 in a relatively horizontal working posture, ensuring the stable working height of each component on the front connecting frame 42. A compaction component 46 is provided on the front side of the front connecting plate 44. The front connecting plate 44 provides installation support for the compaction component 46, so that the compaction component 46 and the front connecting frame 42 maintain a fixed positional relationship. The working position of the compaction component 46 is located behind the working area of ​​the loosening component 43. After the loosening component 43 loosens the soil and separates the stubble, the compaction component 46 can compact the loosened soil and the separated stubble. The compaction component 46 compacts the relatively loose soil after the loosening component 43 through its own weight and rolling action, reducing soil voids, and crushes the separated longer stubble, so that the stubble forms shorter fragments, creating favorable conditions for the subsequent soil-digging component 34 of the returning soil mechanism 3. The rolling direction of the front support wheel 45 is consistent with the travel direction of the straw returning machine. When the front support wheel 45 rolls along the ground, it can drive the front connecting frame 42 and the front connecting plate 44 and the compaction component 46 above to move synchronously, so that the compaction component 46 can continuously compact the area treated by the loosening component 43, ensuring that the working areas of the loosening component 43 and the compaction component 46 are continuously connected without any blank working areas.

[0025] Reference Figures 1-2 The soil-shaving assembly 34 includes a front rotating shaft 341, the left side of which is fixedly connected to the right side of the front rotating disk 33. Multiple soil-shaving blades 342 are fixedly connected to the outer wall of the front rotating shaft 341. The conveying mechanism 36 includes a rear rotating shaft 361, the left side of which is rotatably connected to the rear side of the rear transmission belt 35. A conveyor bed 362 is rotatably connected to the bottom of the rear rotating shaft 361. The crushing assembly 39 includes a main crushing roller 391, the left side of which is fixedly connected to the right side of the rear power motor 38. The main crushing roller 391... The rear side is rotatably connected to the auxiliary crushing roller 392. The soil loosening component 43 includes a rear rotating shaft 431. The left side of the rear rotating shaft 431 is rotatably connected to the right side of the side protective shell 41. The outer wall of the rear rotating shaft 431 is fixedly connected to the soil loosening roller 432. The compaction component 46 includes a front rotating shaft 461. The right side of the front rotating shaft 461 is rotatably connected to the left side of the front support wheel 45. The outer wall of the front rotating shaft 461 is fixedly connected to multiple compaction blades 462. The bottom of the main rotating motor 1 is provided with a side connecting shaft 5. The outer wall of the side connecting shaft 5 is fixedly connected to an anti-slip wheel 6. Specifically, in the soil-digging assembly 34, the left side of the front rotating shaft 341 is connected to the right side of the front rotating disk 33. The power generated by the rotation of the front rotating disk 33 can be directly transmitted to the front rotating shaft 341, driving the front rotating shaft 341 to rotate synchronously. Multiple soil-digging blades 342 fixed on the outer wall of the front rotating shaft 341 rotate with the front rotating shaft 341. During the rotation, the soil-digging blades 342 can be inserted into the field soil to dig the soil and simultaneously comb and gather the straw in the field. The rotation speed of the front rotating shaft 341 is consistent with that of the front rotating disk 33, ensuring a stable working frequency of the soil-digging blades 342 and providing a uniform material source for the subsequent conveying mechanism 36 to transport materials. The distribution of the soil-digging blades 342 is adapted to the axis of the front rotating shaft 341, which can cover a certain width of the working area to avoid missed work. At the same time, the coordinated operation of multiple soil-digging blades 342 can improve the efficiency of soil digging and straw gathering. In the conveying mechanism 36, the left side of the rear rotating shaft 361 is connected to the rear side of the rear transmission belt 35. The power generated by the operation of the rear transmission belt 35 is transmitted to the rear rotating shaft 361, causing the rear rotating shaft 361 to rotate. The bottom of the rear rotating shaft 361 is rotatably connected to the conveying bed 362. When the rear rotating shaft 361 rotates, it can drive the conveying bed 362 to operate. The working area of ​​the conveying bed 362 is connected to the working area of ​​the soil-scraping component 34. The straw and soil gathered by the soil-scraping component 34 can fall directly into the conveying bed 362. The conveying bed 362 transports the material to the crushing component 39 through operation. The rotation direction of the rear rotating shaft 361 matches the conveying direction of the conveying bed 362, ensuring that the material can be transported forward smoothly and avoiding the accumulation of material on the conveying bed 362. In the crushing assembly 39, the left side of the main crushing roller 391 is connected to the right side of the rear power motor 38. After the rear power motor 38 starts, the power generated is transmitted to the main crushing roller 391, driving the main crushing roller 391 to rotate. The rear side of the main crushing roller 391 is rotatably connected to the auxiliary crushing roller 392. When the main crushing roller 391 rotates, it can drive the auxiliary crushing roller 392 to rotate in the opposite direction. A crushing space is formed between the main crushing roller 391 and the auxiliary crushing roller 392. After the material conveyed by the conveying mechanism 36 enters this space, the main crushing roller 391 and the auxiliary crushing roller 392 work together to squeeze and crush the material, crushing large pieces of straw. The rotation speed of the main crushing roller 391 is controlled by the rear power motor 38 to ensure that it matches the material conveying speed of the conveying mechanism 36, avoiding untimely material conveying in the crushing space. In the soil loosening assembly 43, the left side of the rear rotating shaft 431 is connected to the right side of the side protective shell 41. The power output from the auxiliary rotating motor 2 can be transmitted to the rear rotating shaft 431 through the transmission structure around the side protective shell 41, driving the rear rotating shaft 431 to rotate. The soil loosening roller 432, which is fixed to the outer wall of the rear rotating shaft 431, rotates subsequently. During rotation, the soil loosening roller 432 can penetrate the surface soil to loosen the soil and separate crop stubble from the soil. The structural design of the soil loosening roller 432 is adapted to the rotation characteristics of the rear rotating shaft 431, which can improve the soil loosening effect and create conditions for the subsequent operation of the compaction assembly 46. The rotation speed of the rear rotating shaft 431 is matched with the power output of the auxiliary rotating motor 2 to ensure the stable operating efficiency of the soil loosening roller 432.

[0026] Working principle: After the auxiliary rotary motor 2 is started, its power is transmitted to the internal transmission structure of the side protective shell 41 of the stubble-removing mechanism 4, driving the rear rotating shaft 431 of the loosening component 43 to rotate. The rear rotating shaft 431 drives the loosening roller 432 on the outer wall to insert into the surface soil, loosening the soil and separating the crop stubble roots. At the same time, the front support wheel 45 rolls with the body, driving the front rotating shaft 461 of the compaction component 46 to rotate. The front rotating shaft 461 drives the compaction blade 462 to compact the soil and stubble roots after the loosening component 43, completing the initial stubble removal and soil loosening. During this process, the side protective shell 41 protects the output end of the auxiliary rotary motor 2, and the front connecting frame 42 supports the front connecting piece 44 and the front support wheel 45, ensuring the stable operation of each component. This achieves the initial loosening of the field soil and the crushing of stubble roots, reducing resistance for the subsequent operation of the returning-to-field mechanism 3, avoiding interference from stubble roots with subsequent crushing, improving the overall operating efficiency, and protecting the core power components from damage by debris, thus extending the service life of the equipment. After the main rotary motor 1 is started, its output end drives the side rotary disk 31 of the returning-to-field mechanism 3 to rotate. The front transmission belt 32 on the right side of the outer wall of the side rotary disk 31 transmits power to the front rotary disk 33. The front rotary disk 33 drives the front rotating shaft 341 of the right-side soil-digging assembly 34 to rotate. The front rotating shaft 341 drives multiple soil-digging blades 342 to insert into the field, turning over the soil and gathering the straw. At the same time, the rear transmission belt 35 on the left side of the outer wall of the side rotary disk 31 transmits power to the rear rotating shaft 361 of the conveying mechanism 36. The rear rotating shaft 361 drives the conveyor bed 362 to move. The main rotating motor 1 receives and transports the material gathered by the soil-scraping component 34; the rear power motor 38, supported by the rear connecting frame 37 on the rear side of the main rotating motor 1, starts and drives the main crushing roller 391 of the crushing component 39 to rotate. The main crushing roller 391 drives the auxiliary crushing roller 392 to rotate in the opposite direction, crushing the material transported by the conveying mechanism 36; thus realizing the complete processing of large pieces of straw with soil from gathering, transporting to crushing, ensuring that the straw is fully crushed and meets the requirements for returning to the field. The power transmission of each component is continuous, avoiding interruption of material transport and improving the quality and efficiency of straw crushing and returning to the field. Through the coordinated operation of the stubble-killing mechanism 4 and the straw-returning mechanism 3, the soil-loosening component 43 of the stubble-killing mechanism 4 first loosens the soil and separates the stubble roots, and then the compaction component 46 compacts the soil and breaks up the stubble roots. The treated soil environment is more conducive to the insertion of the cutting blade 342 of the cutting component 34 of the straw-returning mechanism 3, reducing the cutting resistance. The crushed stubble root fragments enter the conveying mechanism 36 along with the straw gathered by the cutting component 34, and are then crushed by the crushing component 39, so that the stubble roots and straw are mixed and crushed and returned to the field together. This achieves seamless connection between stubble-killing and straw-returning operations, avoids untreated stubble roots affecting the straw crushing effect, and at the same time, fully mixes the soil, straw, and stubble roots, improves soil fertility, meets the comprehensive needs of farmland for straw return, and further optimizes the straw return effect. The main rotary motor 1 provides core power to the returning-to-field mechanism 3, driving the side rotary disc 31, front transmission belt 32, and rear transmission belt 35 to achieve power distribution, which in turn drives the soil-scraping assembly 34 and the conveying mechanism 36 to operate. In conjunction with the rear power motor 38, it independently drives the crushing assembly 39, ensuring sufficient power and flexible control for each operation. The auxiliary rotary motor 2 provides power to the stubble-killing mechanism 4, independently driving the loosening assembly 43 to operate. The front support wheel 45 drives the compaction assembly 46 to operate along with the machine body, matching the stubble-killing operation with the rhythm of the machine body's movement. This achieves stable and independently controllable power supply for each mechanism. The protective shells 41 on both sides of the stubble-crushing mechanism prevent soil and straw fragments splashed up by the loosening component 43 from contacting the output end of the auxiliary rotary motor 2, ensuring stable power output of the auxiliary rotary motor 2. The rear connecting frame 37 of the returning-to-field mechanism 3 provides stable installation support for the rear power motor 38, preventing the rear power motor 38 from shifting due to vibration during operation, and ensuring stable rolling positions of the main crushing roller 391 and the auxiliary crushing roller 392. The front connecting frame 42 supports the front connecting plate 44 and the front support wheel 45, keeping the rolling component 46 and the loosening component 43 at a fixed operating distance, ensuring that the rolling operation covers the loosened area. This achieves stable installation and operation of each power component and operating component, reduces the impact of vibration on the components, lowers the probability of equipment failure, extends the service life of the components, and ensures long-term stable operation of the equipment.

[0027] Finally, it should be noted that the above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Although the present utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A straw returning machine, comprising a main rotary motor (1), characterized in that: A secondary rotary motor (2) is provided on the front side of the main rotary motor (1), and a field-returning mechanism (3) is provided on the right side of the main rotary motor (1). The field-returning mechanism (3) is used to crush large pieces of straw with soil and return them to the field. A stubble-killing mechanism (4) is provided on the right side of the secondary rotary motor (2). The stubble-killing mechanism (4) is used for preliminary stubble-killing and soil loosening to facilitate subsequent crushing. The returning-to-field mechanism (3) includes a side rotating disk (31), the left side of which is fixedly connected to the output end of the main rotating motor (1). A front drive belt (32) is rotatably connected to the right side of the outer wall of the side rotating disk (31). A front rotating disk (33) is rotatably connected to the front side of the front drive belt (32). A soil-scraping assembly (34) is provided on the right side of the front rotating disk (33). A rear drive belt (35) is rotatably connected to the left side of the outer wall of the side rotating disk (31). A conveying mechanism (36) is provided on the rear side of the rear drive belt (35). A rear connecting frame (37) is provided on the rear side of the main rotating motor (1). A rear power motor (38) is fixedly connected to the left side of the rear connecting frame (37). A crushing assembly (39) is provided on the right side of the rear power motor (38).

2. The straw returning machine according to claim 1, characterized in that: The stubble-clearing mechanism (4) includes a side protective shell (41). The left side of the side protective shell (41) is fixedly connected to the right side of the auxiliary rotary motor (2). The right side of the side protective shell (41) is fixedly connected to a front connecting frame (42). The output end of the auxiliary rotary motor (2) is provided with a soil loosening component (43). The front side of the front connecting frame (42) is fixedly connected to a front connecting piece (44). The bottom front side of the front connecting frame (42) is rotatably connected to a front support wheel (45). The front side of the front connecting piece (44) is provided with a compaction component (46).

3. The straw returning machine according to claim 1, characterized in that: The soil-scraping assembly (34) includes a front rotating shaft (341), the left side of which is fixedly connected to the right side of the front rotating disk (33), and a plurality of soil-scraping blades (342) are fixedly connected to the outer wall of the front rotating shaft (341).

4. A straw returning machine according to claim 1, characterized in that: The conveying mechanism (36) includes a rear rotating shaft (361), the left side of which is rotatably connected to the rear side of the rear transmission belt (35), and the bottom of which is rotatably connected to a conveyor bed (362).

5. A straw returning machine according to claim 1, characterized in that: The crushing assembly (39) includes a main crushing roller (391), the left side of which is fixedly connected to the right side of the rear power motor (38), and the rear side of the main crushing roller (391) is rotatably connected to an auxiliary crushing roller (392).

6. A straw returning machine according to claim 2, characterized in that: The soil loosening assembly (43) includes a rear rotating shaft (431), the left side of which is rotatably connected to the right side of the side protective shell (41), and a soil loosening roller (432) is fixedly connected to the outer wall of the rear rotating shaft (431).

7. A straw returning machine according to claim 2, characterized in that: The compaction assembly (46) includes a front rotating shaft (461), the right side of which is rotatably connected to the left side of the front support wheel (45), and a plurality of compaction blades (462) are fixedly connected to the outer wall of the front rotating shaft (461).

8. A straw returning machine according to claim 1, characterized in that: The bottom of the main rotary motor (1) is provided with a side connecting shaft (5), and the outer wall of the side connecting shaft (5) is fixedly connected with a non-slip wheel (6).

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