Multi-group parallel type compound tillage machine

Abstract

The invention discloses a multi-group parallel compound tillage machine, which belongs to the technical field of agricultural machinery, and comprises a dragging main frame, and a subsoiling shovel group, a stubble treatment group, a stubble cleaning harrow group and a disc harrow group which are sequentially mounted on the lower side of the dragging main frame, and a compound operation flow of subsoiling, stubble treatment, stubble cleaning and raking is formed. The grass stubble processing set is composed of a shallow shovel assembly and an overturning assembly. An inclined shovel head of the shallow shovel assembly shovels up and conveys a soil surface with grass stubbles, and the rear overturning assembly overturns and throws soil blocks through an overturning plate installed on a rotating shaft, so that organic matter such as the grass stubbles is fully mixed with the soil. Through reasonable configuration and collaborative operation of all the working parts, multiple procedures such as deep scarification, grass stubble treatment, stubble cleaning and soil breaking, land leveling and the like can be efficiently completed through one-time land entering, straw returning to the field is promoted, and the land preparation quality and the operation efficiency are improved.

Description

TECHNICAL FIELD

[0001] The present application belongs to the technical field of agricultural machinery, and particularly relates to a multi-group parallel type compound cultivator. BACKGROUND

[0002] The combined land preparation machine, as the core equipment of modern agricultural production, has developed from a single-function machine to a compound operation machine integrating stubble removal, deep scarification, rotary tillage, harrowing, and pressing, etc. The machine is usually powered by a tractor, and multiple operation components are arranged reasonably to complete multiple tillage and land preparation procedures at one time, effectively replacing the traditional mode of plowing, harrowing, and deep scarification, etc. which are completed in the field for multiple times.

[0003] Although the prior art has made progress, there are still deficiencies in dealing with crop straw and stubble; the existing equipment is difficult to fully mix the organic matter such as stubble with soil particles, resulting in uneven distribution of organic matter, affecting the subsequent decomposition efficiency and soil fertility improvement; the traditional land preparation machine often has the problem of uneven stubble coverage after operation, and cannot effectively destroy the basis for weed growth, limiting the further improvement of the effect of pest and weed control. SUMMARY

[0004] In view of the above-mentioned shortcomings of the prior art, the purpose of the present application is to provide a multi-group parallel type compound cultivator, which realizes the shallow lifting and overturning mixing of soil and stubble through a shallow overturning structure.

[0005] To achieve the above-mentioned purpose, the present application provides the following technical scheme: The present application comprises a towing main frame, a deep scarification shovel group, a stubble removal harrow group, and a disc harrow group, the towing main frame is moved by being towed by a tractor, the deep scarification shovel group, the stubble removal harrow group, and the disc harrow group are respectively installed on the lower side of the towing main frame, and further comprises a stubble treatment group, the deep scarification shovel group, the stubble treatment group, the stubble removal harrow group, and the disc harrow group are arranged and installed in sequence from front to back on the lower side of the towing main frame; the stubble treatment group comprises a shallow shovel assembly and an overturning assembly; the shallow shovel assembly comprises a shovel head and a conveying part, the surface of the shovel head is inclined, the low end of the inclination of the shovel head is toward the towing direction, the conveying part is located at the high end of the inclination of the shovel head, the shovel head sinks into the soil surface during the ground working of the cultivator, and the soil surface with stubble is lifted and conveyed to the conveying part, the overturning assembly comprises an overturning shaft and an overturning plate, the overturning plate has multiple pieces and is respectively fixedly installed around the overturning shaft, the overturning shaft is rotationally arranged behind the shallow shovel assembly, and the overturning plate overturns and falls to the ground with the movement of the towing main frame and the rotation of the overturning shaft.

[0006] Optionally, the stubble processing unit also includes a transmission assembly, which includes a roller, a main transmission gear, a secondary transmission gear, a first transmission wheel, and a first transmission belt. The roller is rotatably disposed at the bottom of the conveying section. The main transmission gear is coaxially fixed with the roller, and the secondary transmission gear meshes with the main transmission gear. There are two first transmission wheels, one of which is coaxially fixed with the secondary transmission gear, and the other is coaxially fixed with the tilting shaft. The first transmission belt is driven by the first transmission wheel.

[0007] Optionally, the flip plate has an arc-shaped structure, with the concave surface of the flip plate facing the rotation direction of the flip plate.

[0008] Optionally, the conveying unit includes a soil conveyor belt and drive rollers. There are two drive rollers, which are rotatably disposed at the rear end of the shovel head and the front end of the tilting assembly, respectively. The soil conveyor belt is driven by the two drive rollers, and the surface movement direction of the soil conveyor belt is opposite to the dragging direction, so as to transfer the soil surface to the position of the tilting assembly.

[0009] Optionally, one of the drive rollers is fixed coaxially with the secondary drive gear.

[0010] Optionally, the conveying unit further includes a connecting plate located between the rear end of the transmission belt and the flipping assembly.

[0011] Optionally, the system also includes a cutting assembly, which comprises a cutting shaft, a cutting blade, and a top blade. The cutting shaft is rotatably mounted above the conveying section. The cutting blade consists of multiple blades that are fixed around the outside of the cutting shaft and arranged in multiple rows. The top blade consists of multiple blades that are evenly arranged above the cutting shaft, with the blades facing downwards. The top blades and cutting blades are staggered. The transmission assembly further includes a second transmission belt and a second transmission wheel. There are two second transmission wheels, one of which is coaxially fixed to the cutting shaft, and the other is coaxially fixed to the main transmission gear. The second transmission belt wraps around the outside of the main transmission wheel and the second driven wheel.

[0012] Optionally, the roller has a long columnar structure and multiple raised ridges are provided around the outer side of the roller.

[0013] Optionally, there are multiple stubble processing groups arranged side by side, and each group also includes a partition box. The partition box is a thin box and is fixedly installed on both sides of the stubble processing group. The two ends of the shovel head are fixed between adjacent partition boxes. The two ends of the transmission roller, roller, tilting shaft, and cutting shaft are rotatably mounted on adjacent partition boxes via bearings. The cutting assembly also includes a support beam, the two ends of which are fixed to the adjacent partition boxes, and the top blade is fixed to the support beam.

[0014] Optionally, the cutting blade extends outward from the cutting axis and bends toward the cutting edge, and the bending direction of the cutting blade is the rotation direction of the cutting blade.

[0015] The beneficial effects of this invention are as follows: The stubble treatment unit of this invention, through its synergistic design of shallow shovel and turning, allows the shallow shovel component to cut into the soil surface, hoisting up and transporting the thin layer of soil containing stubble. The turning component, through a rotating turning plate, effectively impacts and throws the transported soil clods. This process ensures that organic matter such as stubble is thoroughly mixed with soil particles and evenly distributed in the tillage layer, creating favorable conditions for the rapid decomposition of organic matter, helping to improve soil physical and chemical properties and enhance fertility. This operation effectively removes surface stubble, destroys the growth base of weeds, and helps reduce the incidence of pests, diseases, and weeds.

[0016] Other advantages, objectives, and features of the invention will be set forth in the following description and will be apparent to those skilled in the art in some respects, or may be learned by practice of the invention. The objectives and other advantages of the invention can be realized and obtained through the following description. Attached Figure Description

[0017] To make the objectives, technical solutions, and beneficial effects of this invention clearer, the following figures are provided for illustration: Figure 1 A schematic diagram of the overall structure of the tillage machine according to an embodiment of the present invention; Figure 2 A schematic diagram of the transmission assembly structure of this invention embodiment; Figure 3 for Figure 2 Enlarged view of point A; Figure 4 A schematic diagram of the bottom structure of the stubble treatment group in this invention embodiment; Figure 5 A schematic diagram of the internal structure of the stubble treatment group according to an embodiment of the present invention; The following are labeled in the attached diagram: 1. Main scaffold; 2. Deep tillage shovel assembly; 3. Stubble harrow assembly; 4. Disc harrow assembly; 5. Stubble treatment assembly; 511. Shovel head; 5121. Soil surface conveyor belt; 5122. Drive roller; 5123. Connecting plate; 521. Tilting shaft; 522. Tilting plate; 531. Roller; 532. Main drive gear; 533. Secondary drive gear; 534. First drive wheel; 535. First drive belt; 536. Second drive wheel; 537. Second drive belt; 54. Cutting assembly; 541. Cutting shaft; 542. Cutting blade; 543. Top blade; 544. Support beam; 6. Partition box. Detailed Implementation

[0018] The following specific embodiments illustrate the implementation of the present invention. Those skilled in the art can easily understand other advantages and effects of the present invention from the content disclosed in this specification.

[0019] Please refer to the figures. It should be understood that the structures, proportions, sizes, etc., depicted in the accompanying drawings are merely for illustrative purposes to aid those skilled in the art and are not intended to limit the scope of the invention. Therefore, they have no substantial technical significance. Any modifications to the structure, changes in proportions, or adjustments to size, without affecting the effectiveness and purpose of the invention, should still fall within the scope of the disclosed technical content. Furthermore, the terms such as "upper," "lower," "left," "right," "middle," and "one" used in this specification are merely for clarity and are not intended to limit the scope of the invention. Changes or adjustments to their relative relationships, without substantially altering the technical content, should also be considered within the scope of the invention.

[0020] The following embodiments are for illustrative purposes only. These embodiments can be combined and are not limited to the content shown in any single embodiment below.

[0021] This invention provides a multi-unit parallel compound tillage machine, such as Figure 1 and Figure 5 As shown, the system includes a towing frame 1, a deep tillage shovel assembly 2, a stubble harrow assembly 3, and a disc harrow assembly 4. The towing frame 1 is moved by a tractor. The deep tillage shovel assembly 2, the stubble harrow assembly 3, and the disc harrow assembly 4 are respectively installed on the underside of the towing frame 1. The system is characterized by further including a stubble treatment assembly 5. The deep tillage shovel assembly 2, the stubble treatment assembly 5, the stubble harrow assembly 3, and the disc harrow assembly 4 are arranged sequentially from front to back on the underside of the towing frame 1. The stubble treatment assembly 5 includes a shallow shovel assembly and a tilting assembly. The shallow shovel assembly includes a shovel head 511 and a conveying part. The surface of the shovel head 511 is inclined. The lower inclined end of the shovel head 511 faces the dragging direction, and the conveying part is located at the upper inclined end of the shovel head 511. When the tiller is in operation, the shovel head 511 sinks into the soil surface, shovels up the soil surface with stubble and transfers it to the conveying part. The flipping assembly includes a flipping shaft 521 and a flipping plate 522. There are multiple flipping plates 522, which are fixedly installed around the flipping shaft 521. The flipping shaft 521 is rotatably located behind the shallow shovel assembly. As the dragging main frame 1 moves and the flipping shaft 521 rotates, the flipping plate 522 flips the transferred soil surface and drops it to the ground.

[0022] The present invention provides a multi-unit parallel compound tillage machine, which introduces a stubble treatment group 5 and rationally integrates and sequentially arranges it with traditional operating components such as deep tillage, stubble removal, and harrowing, forming a compound operation process of "deep tillage - stubble treatment - stubble removal - harrowing". The deep tillage shovel group 2 first cuts into the soil to loosen the soil deeply, creating conditions for subsequent operations. The inclined shovel head 511 of the shallow shovel component in the stubble treatment group 5 can shovel up the soil surface layer with stubble as a whole and transport it through the conveyor; the rear turning component uses a high-speed rotating turning plate 522 to impact and throw the transported soil clods. This process can effectively turn over and mix organic matter such as stubble into the tillage layer, which not only avoids clogging by grass, but also promotes straw return to the field. The stubble removal harrow group 3 further crushes the remaining stubble and soil clods. Finally, the disc harrow group 4 is responsible for leveling the soil and breaking up clods, preparing for sowing.

[0023] The stubble treatment unit 5 in this invention, through its synergistic design of shallow shovel and turning, allows the shallow shovel component to cut into the soil surface, hoisting up and transporting the thin layer of soil containing stubble. The turning component, through a rotating turning plate 522, effectively impacts and throws the transported soil clods. This process ensures that organic matter such as stubble is thoroughly mixed with soil particles and evenly distributed in the tillage layer, creating favorable conditions for the rapid decomposition of organic matter, helping to improve soil physical and chemical properties and enhance fertility. This operation effectively removes surface stubble, destroys the growth base of weeds, and helps reduce the incidence of pests, diseases, and weeds.

[0024] In further proposals, such as Figure 2 and Figure 3 As shown, the stubble processing unit 5 also includes a transmission assembly, which includes a roller 531, a main transmission gear 532, a secondary transmission gear 533, a first transmission wheel 534, and a first transmission belt 535. The roller 531 is rotatably disposed at the bottom of the conveying section. The main transmission gear 532 is coaxially fixed with the roller 531. The secondary transmission gear 533 meshes with the main transmission gear 532. There are two first transmission wheels 534. One of the first transmission wheels 534 is coaxially fixed with the secondary transmission gear 533, and the other first transmission wheel 534 is coaxially fixed with the tilting shaft 521. The first transmission belt 535 is driven by the first transmission wheel 534.

[0025] The newly added transmission components enable self-drive and collaborative operation of the stubble processing unit 5. A power transmission chain is constructed to convert the kinetic energy of the tiller into the driving force of the working components inside the processing unit. This transmission path begins with the roller 531 in contact with the ground. As the tiller moves forward, the roller 531 rotates due to the friction of the ground, and its coaxially fixed main drive gear 532 rotates accordingly, converting the kinetic energy of horizontal movement into rotational power. The main drive gear 532 meshes with the secondary drive gear 533 to achieve steering changes. Two first transmission wheels 534 are connected by a first transmission belt 535. One of them is coaxial with the secondary transmission gear 533, and the other is coaxial with the tilting shaft 521, thus ultimately transmitting power to the tilting assembly. The soil clods scooped up by the shallow shovel assembly are conveyed backward by the conveyor. The transmission assembly ensures that the rotation speed of the tilting plate 522 is automatically matched with the forward speed of the machine: the faster the roller 531 rotates, the higher the tilting frequency of the tilting plate 522 also increases. By changing the direction of rotation, the tilting plate 522 tilts backward as the grass stubble processing group 5 moves forward. This linkage ensures that the soil clods can be tilted and spread in a timely and even manner, effectively avoiding the problems of clogging or uneven spreading that may be caused by asynchronous speeds, and making the grass stubble and soil more thoroughly mixed.

[0026] This transmission scheme is highly efficient and energy-saving, utilizing the kinetic energy of the entire machine to drive the stubble processing unit 5, eliminating the need for additional tractor power output. This improves operational quality and reliability. The mechanical transmission ensures a stable speed relationship between components such as the roller 531 and the turning shaft 521, making the stubble turning and soil mixing process more uniform and controllable, resulting in a high degree of surface flatness after tillage. Simultaneously, the structure is relatively simple, eliminating complex transmission mechanisms such as external universal joints, reducing potential failure points, facilitating maintenance, and significantly enhancing operational reliability. This design makes the stubble processing unit 5 a relatively independent, self-driving functional module, simplifying the docking process with the tractor and making the overall structure more compact.

[0027] In further proposals, such as Figure 5 As shown, the flip plate 522 has an arc-shaped structure, and the concave surface of the flip plate 522 faces the rotation direction of the flip plate 522.

[0028] In this structure, the tilting plate 522 is designed as an arc-shaped structure with its concave surface facing the direction of rotation. When the tilting plate 522 rotates with the tilting shaft 521, its concave surface can more effectively "catch" the soil clods with stubble conveyed by the shallow shovel assembly's conveying section. Compared with a planar structure, the arc surface provides a larger initial contact area and guiding effect, allowing the soil clods and stubble to be guided into the concave surface of the tilting plate 522 after leaving the conveying section. As the tilting plate 522 rotates, it achieves more thorough wrapping and bearing, which not only improves the smoothness of material conveying.

[0029] This concave structure optimizes the uniformity of spreading, making the soil clods more evenly distributed during the turning process, effectively avoiding local accumulation or missed tillage.

[0030] In further proposals, such as Figure 3 and Figure 5 As shown, the conveying unit includes a soil surface conveyor belt 5121 and a drive roller 5122. There are two drive rollers 5122, which are respectively rotatably disposed at the rear end of the shovel head 511 and the front end of the flipping assembly. The soil surface conveyor belt 5121 is driven by the two drive rollers 5122. The surface movement direction of the soil surface conveyor belt 5121 is opposite to the dragging direction, and it is used to transfer the soil surface to the position of the flipping assembly.

[0031] In a further embodiment, the conveying unit of the stubble processing group 5 achieves efficient transport of soil and stubble through the coordinated design of the soil surface conveyor belt 5121 and the drive roller 5122. The two drive rollers 5122 are respectively arranged at the rear end of the shovel head 511 and the front end of the tilting assembly, forming a closed transmission path. When the tiller moves forward, the shovel head 511 scoops up the soil with stubble, and the soil surface conveyor belt 5121 moves at a speed opposite to the dragging direction under the drive of the drive roller 5122 (i.e., the surface of the conveyor belt moves backward), so that the soil-stubble mixture is continuously and smoothly transported to the tilting assembly.

[0032] This conveyor belt structure improves the continuity and controllability of stubble processing. Its reverse conveying structure makes the transport of soil-stubble mixtures smoother, effectively reducing material accumulation or uneven spillage.

[0033] In further proposals, such as Figure 3 and Figure 5 One of the drive rollers 5122 is coaxially fixed to the secondary drive gear 533. Both rotate synchronously as a single unit. This design allows the rotational power of the drive roller 5122 to directly originate from the rigidly connected secondary drive gear 533, achieving reverse rotation. The roller 531 drives the secondary drive gear 533 via the main drive gear 532, which in turn drives the coaxial drive roller 5122 to rotate, ultimately driving the surface conveyor belt 5121. This coaxial connection structure is compact, effectively simplifying the power transmission chain from the gear train to the conveyor belt and reducing the need for additional linkage mechanisms.

[0034] In a further proposed solution, refer to Figure 5The conveying unit also includes a connecting plate 5123, which is located between the rear end of the transmission belt and the tilting assembly. The connecting plate 5123 serves as a transition and guide, filling the physical gap between the conveyor belt's discharge end and the high-speed rotating tilting plate 522, ensuring that the soil clods with stubble transported by the conveyor belt can be smoothly received and accurately guided to the working range of the tilting plate 522. This improves the continuity and reliability of material transfer between key workstations.

[0035] In further proposals, such as Figure 3 and Figure 5 As shown, the system also includes a cutting assembly 54, which comprises a cutting shaft 541, a cutting blade 542, and a top blade 543. The cutting shaft 541 is rotatably mounted above the conveying section. The cutting blade 542 consists of multiple blades, which are fixed around the outside of the cutting shaft 541 and arranged in multiple rows. The cutting blades 542 extend outward from the cutting shaft 541 and bend towards the cutting edge, with the bending direction of the cutting blades 542 being the direction of rotation of the cutting blades 542. The top blade 543 consists of multiple blades, which are evenly arranged above the cutting shaft 541, with the cutting edge of the top blade 543 facing downward. The top blades 543 and the cutting blades 542 are staggered. The transmission assembly also includes a second transmission belt 537 and a second transmission wheel 536. There are two second transmission wheels 536, one of which is coaxially fixed to the cutting shaft 541, and the other is coaxially fixed to the main transmission gear 532. The second transmission belt 537 is wrapped around the outside of the main transmission wheel and the second driven wheel.

[0036] In this structure, the rotation direction of the cutting shaft 541 is kept consistent with the rotation direction of the rollers 531 during the machine's movement via the transmission system. When the cutting blade 542 contacts the mixture of soil clods and stubble conveyed by the conveyor, the blade 542, while revolving with the cutting shaft 541, can push the soil clods and stubble forward, assisting in transferring them to the flipping plate 522, rather than obstructing the stubble and soil. For longer stubble, the rotation of the cutting blade 542 can smoothly lift and cut it. Longer stubble is subjected to tension as it is lifted by the blade; when its entanglement point meets the blade, combined with the shearing action formed by the top blade 543, the fiber structure can be cut more efficiently.

[0037] This solution improves the precision of breaking and cutting shallow stubble and soil. The pushing action on soil clods makes it easier to form uniform, fine particles, while the "lift-stretch-cut" mechanism for stubble effectively handles long straw that is prone to tangling, preventing long fiber materials from becoming entangled. This creates conditions for the subsequent operation of the stubble harrow group 3 and disc harrow group 4. The soil clods and stubble mixture, after being finely processed by this cutting component 54, falls into the subsequent turning component with more uniform size and length of stubble and soil clods, preventing stubble from clumping together. This not only improves the return-to-field effect but also makes the post-plowed surface smoother, significantly improving the overall land preparation quality.

[0038] In further proposals, such as Figure 4 As shown, the roller 531 has a long, columnar structure with multiple raised ridges around its outer side. This increases the contact area between the roller 531 and the ground. When the tiller moves, the raised ridges effectively embed into the soil, generating stronger meshing friction, thus significantly improving the reliability of power transmission. It also enhances the structural rigidity of the roller 531, allowing it to better resist deformation when working in uneven fields, ensuring transmission stability, effectively increasing traction and preventing slippage. This ensures that the cutting blade 542 and the tilting plate 522 receive continuous and stable power input, improving the adaptability and reliability of the stubble processing unit 5 in the field.

[0039] In further proposals, such as Figure 1 and Figure 2 As shown, there are multiple stubble processing groups 5 arranged side by side, and each group also includes a partition box 6. The partition box 6 is a thin box, and each partition box 6 is fixedly installed on both sides of the stubble processing group 5. The shovel head 511 is fixed at both ends between adjacent partition boxes 6. The transmission roller 5122, roller 531, tilting shaft 521, and cutting shaft 541 are rotatably mounted on adjacent partition boxes 6 via bearings at both ends. The cutting assembly 54 also includes a support beam 544, with both ends fixed to the adjacent partition boxes 6. The top blade 543 is fixed to the support beam 544. Structural analysis and explanation.

[0040] In this further solution, by adopting an overall layout of multiple stubble processing groups 5 arranged side by side and introducing a partition box 6 support structure, the core problems such as excessive torque and structural instability that may be caused by the excessive length of a single functional group under wide-area operation conditions are effectively solved. The partition box 6, as a thin-walled box-shaped structure, is fixedly installed on both sides of each stubble processing group 5, essentially dividing the entire operating width into multiple independent modular operating units. Each unit is equipped with complete shallow shovel, conveying, cutting, and turning components. The two ends of its shovel head 511 are embedded between adjacent partition boxes 6 to form a rigid connection, while key rotating components such as the transmission roller 5122, roller 531, turning shaft 521, and cutting shaft 541 are supported on the partition box 6 by bearings. This design significantly shortens the support span of each shaft system, greatly reducing the risk of deformation and stress concentration caused by torsional vibration of long shafts. At the same time, the two ends of the support beam 544 are fixed to the partition box 6, providing a stable suspension point for the top blade 543. The partition box 6 itself has high bending and torsional stiffness, which can evenly transfer soil cutting resistance to the towing main frame 1, avoiding excessive local stress that could lead to frame deformation. Through this modular partition design, the continuity of the overall working width is maintained, and the load is distributed, improving the system's adaptability and reliability in non-uniform soil conditions.

[0041] This structure significantly improves the overall structural stability and torsional resistance of the machine, avoiding the resonance fracture problem common in long-shaft structures. It is especially suitable for complex working conditions such as high moisture content or high stubble density. The modular unit design makes each stubble treatment group 5 a mechanically independent system. Local overload will not be transmitted to adjacent units through the continuous beam frame, reducing the risk of cascading failures. At the same time, it facilitates the rapid isolation and maintenance of faulty sections. Through spatial mechanics optimization, this design ensures operational efficiency while achieving long-term stable operation of the equipment under high load conditions.

[0042] Finally, it should be noted that the above preferred embodiments are only used to illustrate the technical solutions of the present invention and are not intended to limit it. Although the present invention has been described in detail through the above preferred embodiments, those skilled in the art should understand that various changes can be made to it in form and detail without departing from the scope defined by the claims of the present invention.

Claims

1. A multi-unit parallel compound tillage machine, comprising a towing main frame (1), a deep tillage shovel assembly (2), a stubble harrow assembly (3), and a disc harrow assembly (4), wherein the towing main frame (1) is towed by a tractor, and the deep tillage shovel assembly (2), the stubble harrow assembly (3), and the disc harrow assembly (4) are respectively installed on the underside of the towing main frame (1), characterized in that: It also includes a stubble processing group (5), wherein the deep loosening shovel group (2), the stubble processing group (5), the stubble harrow group (3), and the disc harrow group (4) are arranged sequentially from front to back on the underside of the towing main frame (1); the stubble processing group (5) includes a shallow shovel assembly and a turning assembly; the shallow shovel assembly includes a shovel head (511) and a conveying part, the surface of the shovel head (511) is inclined, the lower inclined end of the shovel head (511) faces the towing direction, and the conveying part is located at the upper inclined end of the shovel head (511). When the head (511) is working on the ground, it sinks into the soil surface, shovels up the soil surface with stubble and transfers it to the conveyor. The flipping assembly includes a flipping shaft (521) and a flipping plate (522). The flipping plate (522) has multiple pieces and is fixedly installed around the flipping shaft (521). The flipping shaft (521) is rotatably located behind the shallow shovel assembly. As the drag frame (1) moves and the flipping shaft (521) rotates, the flipping plate (522) flips the transferred soil surface and drops it to the ground.

2. The multi-unit parallel compound tillage machine according to claim 1, characterized in that: The stubble processing unit (5) also includes a transmission assembly, which includes a roller (531), a main transmission gear (532), a secondary transmission gear (533), a first transmission belt (535), and a first transmission wheel (534). The roller (531) is rotatably disposed at the bottom of the conveying section. The main transmission gear (532) is coaxially fixed with the roller (531). The secondary transmission gear (533) meshes with the main transmission gear (532). There are two first transmission wheels (534). One of the first transmission wheels (534) is coaxially fixed with the secondary transmission gear (533), and the other first transmission wheel (534) is coaxially fixed with the flipping shaft (521). The first transmission belt (535) is driven by the first transmission wheel (534).

3. The multi-unit parallel compound tillage machine according to claim 2, characterized in that: The flip plate (522) has an arc-shaped structure, and the concave surface of the flip plate (522) faces the rotation direction of the flip plate (522).

4. The multi-unit parallel compound tillage machine according to claim 3, characterized in that: The conveying unit includes a soil conveyor belt (5121) and drive rollers (5122). There are two drive rollers (5122) which are rotatably disposed at the rear end of the shovel head (511) and the front end of the flipping assembly, respectively. The soil conveyor belt (5121) is driven by the two drive rollers (5122). The surface movement direction of the soil conveyor belt (5121) is opposite to the dragging direction, and it is used to transfer the soil surface to the position of the flipping assembly.

5. The multi-group parallel compound tillage machine according to claim 4, characterized in that: One of the transmission rollers (5122) is coaxially fixed with the secondary transmission gear (533).

6. The multi-unit parallel compound tillage machine according to claim 5, characterized in that: The conveying unit also includes a connecting plate (5123), which is located between the rear end of the transmission belt and the flipping assembly.

7. The multi-group parallel compound tillage machine according to claim 6, characterized in that: It also includes a cutting assembly (54), which includes a cutting shaft (541), a cutting blade (542), and a top blade (543). The cutting shaft (541) is rotatably mounted above the conveying section. The cutting blade (542) has multiple blades, which are fixed around the outside of the cutting shaft (541) and arranged in multiple rows. The top blade (543) has multiple blades and is evenly arranged above the cutting shaft (541). The blades of the top blade (543) face downwards, and the top blade (543) and the cutting blade (542) are staggered. The transmission assembly also includes a second transmission belt (537) and a second transmission wheel (536). There are two second transmission wheels (536), one of which is coaxially fixed with the cutting shaft (541), and the other is coaxially fixed with the main transmission gear (532). The second transmission belt (537) is wrapped around the outside of the main transmission wheel and the second driven wheel.

8. The multi-unit parallel compound tillage machine according to claim 7, characterized in that: The roller (531) has a long columnar structure and multiple raised ridges are provided around the outside of the roller (531).

9. The multi-unit parallel compound tillage machine according to claim 8, characterized in that: There are multiple grass stubble processing groups (5), which are arranged side by side. The group also includes a partition box (6), which is a thin box. The partition box (6) is fixedly installed on both sides of the grass stubble processing group (5). The two ends of the shovel head (511) are fixed between adjacent partition boxes (6). The two ends of the transmission roller (5122), roller (531), flipping shaft (521) and cutting shaft (541) are respectively rotatably mounted on adjacent partition boxes (6) through bearings. The cutting assembly (54) also includes a support beam (544), which is fixed at both ends on the adjacent partition box (6). The top blade (543) is fixed on the support beam (544).

10. The multi-unit parallel compound tillage machine according to claim 9, characterized in that: The cutting blade (542) extends outward from the cutting shaft (541) and bends toward the cutting edge. The bending direction of the cutting blade (542) is the rotation direction of the cutting blade (542).

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