A wheat seeding machine special for cotton and wheat intercropping

Abstract

This invention discloses a wheat seeder specifically designed for cotton-wheat intercropping, comprising: a frame; a transmission box fixed to the frame; a ridging shaft rotatably mounted at the bottom of the frame, the ridging shaft being connected to the first output end of the transmission box via a first transmission mechanism; two full-row ridging discs fixed at intervals in the middle of the ridging shaft, used to rid entire rows of cotton; half-row ridging discs fixed near both ends of the ridging shaft, used to rid half rows of cotton, and cooperating with the half-row ridging discs used when the seeder returns to sow, to rid entire rows of cotton; the space between the full-row ridging discs and their adjacent half-row ridging discs defines the wheat sowing rows, with the cotton rows located between the two wheat sowing rows; and a wheat sowing mechanism mounted on the frame. This seeder achieves integrated wheat sowing and cotton retention through the ridging disc layout, improving the efficiency of cotton-wheat intercropping.

Description

Technical Field

[0001] This invention relates to the field of agricultural machinery technology, and more specifically to a wheat planter specifically designed for cotton-wheat intercropping. Background Technology

[0002] In recent years, the profitability of cotton monoculture has been declining, severely impacting the enthusiasm for cotton planting. Intercropping and relay cropping in cotton fields can fully utilize arable land and light and heat resources, making it an effective way to increase cotton planting profits. Especially in recent years, record-breaking wheat and cotton yields under cotton-wheat intercropping in Hebei and Shandong provinces, and the "reducing cotton and increasing grain" planting structure adjustment promoted in Xinjiang, have made the application prospects of cotton-wheat intercropping technology broad, and the planting area has been increasing year by year. Cotton-wheat intercropping involves sowing wheat in late autumn and intercropping cotton between the wheat rows the following spring, thus achieving two crops a year and improving the utilization rate of land and light and heat resources. However, most existing wheat planters are designed for monoculture (flat cropping) fields (agronomically defined as fields where only one crop is grown on the same plot of land), and their structure and working mode are significantly contradictory to the requirements of intercropping agronomy.

[0003] Conventional wheat planters typically have a row spacing of 15-20 cm to ensure the population density of monoculture wheat. However, in cotton-wheat intercropping, it is necessary to reserve sufficient wide rows for cotton in the following year (55 cm reserved for cotton rows), and existing wheat planters do not have the function of reserving cotton rows.

[0004] The width of the sowing strip is not adjustable: Existing machines cannot flexibly adjust the concentrated sowing width of wheat to adapt to the requirements of different intercropping specifications in different regions, such as "3-2" and "4-2" ("3-2" means planting 3 rows of preceding crop (such as wheat) and 2 rows of subsequent crop (such as cotton) in one planting strip unit. Similarly, "4-2" means planting 4 rows of preceding crop and 2 rows of subsequent crop).

[0005] Currently, cotton farmers and large-scale growers mostly use manual sowing or make temporary modifications to existing seeders. This results in problems such as low sowing efficiency, lack of cotton row reservation function, non-adjustable row spacing, and high labor intensity, which seriously restrict the large-scale and standardized promotion of cotton-wheat intercropping technology. Summary of the Invention

[0006] In view of this, the present invention provides a special wheat planter for cotton-wheat intercropping, so as to at least solve one of the above problems.

[0007] To achieve the above objectives, the present invention adopts the following technical solution: A special wheat planter for cotton-wheat intercropping includes: A frame, which is connected to a tractor unit via a suspension bracket thereon; A transmission box, which is fixed on the frame, has its input end connected to the output end of the tractor vehicle via a universal joint; A ridging shaft is rotatably mounted at the bottom of the frame. The ridging shaft is connected to the first output end of the transmission box via a first transmission mechanism. Two full-row ridging discs are fixed at intervals in the middle of the ridging shaft. The two full-row ridging discs are used to rid a full row of cotton. Half-row ridging discs are fixed near both ends of the ridging shaft. The half-row ridging discs are used to rid a half row of cotton. The half-row ridging discs cooperate with the half-row ridging discs used when the seeder returns to sowing to rid a full row of cotton. The space between the full-row ridging discs and the adjacent half-row ridging discs defines a wheat sowing row. The cotton ridge is located between two wheat sowing rows. A wheat sowing mechanism, mounted on a frame, for sowing wheat in two wheat sowing rows.

[0008] Furthermore, it also includes two press rollers disposed on the rear side of the frame, the two press rollers corresponding one-to-one with the positions of the two wheat sowing rows, and the roller shafts of the press rollers being connected to the shared rotating shaft of the wheat sowing mechanism via a second transmission mechanism.

[0009] Furthermore, the wheat sowing mechanism includes: The seed box is fixed on the frame and located behind the transmission box. Multiple seed outlets of the seed box are fixed with external grooved wheel seed metering devices, and multiple external grooved wheel seed metering devices are connected by a shared rotating shaft. The double-disc furrow opener consists of multiple double-disc furrow openers positioned above the wheat sowing rows. Each double-disc furrow opener is detachably mounted on the crossbeam of the frame via a U-shaped clamp. The seed outlet of each double-disc furrow opener is connected to the seed outlet of the corresponding outer groove wheel seed metering device via a seed delivery pipe.

[0010] Furthermore, it also includes a central pipe-laying device and two side pipe-laying devices installed on the frame. The central pipe-laying device is used to lay drip irrigation pipes on the entire row of the cotton ridge, and the side pipe-laying devices are used to lay drip irrigation pipes on half a row of the cotton ridge.

[0011] Furthermore, the central pipe-laying device has the same structure as the two side-side pipe-laying devices, wherein the side-side pipe-laying device includes: A tube shaft holder, which is mounted on the machine frame; A support beam is fixed to the side of the frame. An upper pipe guide sleeve and a lower pipe guide sleeve are fitted on the support beam. A guide roller is provided at the bottom end of the support beam. The drip irrigation pipe on the pipe shaft frame passes through the upper pipe guide sleeve and the lower pipe guide sleeve in sequence and is pressed against the bottom of the guide roller.

[0012] Furthermore, the bottom of the support beam, located behind the guide roller, is provided with a soil-covering wheel for burying the drip irrigation pipe.

[0013] Furthermore, a cantilever beam is fixed to the side of the frame, and an installation sleeve is provided on the cantilever beam. The support beam passes through the installation sleeve and is fixed by screws.

[0014] Furthermore, it also includes a rotary tiller shaft rotatably mounted on the front side of the frame, the rotary tiller shaft being connected to the second output end of the transmission box via a third transmission mechanism, and multiple rotary tillers being fixed on the rotary tiller shaft.

[0015] Furthermore, the frame has a protective cover with a bottom opening located on the outside of the rotary tiller blades.

[0016] Furthermore, the opening of the protective cover is detachably fitted with a closure. Attached Figure Description

[0017] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on the provided drawings without creative effort.

[0018] Figure 1 A schematic diagram of the axonal structure of a special wheat planter for cotton-wheat intercropping provided by the present invention.

[0019] Figure 2 for Figure 1 A schematic diagram of the structure viewed from below.

[0020] Figure 3 for Figure 1 A top-view structural diagram.

[0021] Figure 4 for Figure 1 The diagram on the right side shows the structure.

[0022] Figure 5 for Figure 1 A schematic diagram of the structure on the left side.

[0023] Figure 6 for Figure 1 middle Figure 5 A schematic diagram of the second transmission mechanism.

[0024] Figure 7 for Figure 6 A magnified schematic diagram of the structure of part A in the middle.

[0025] Figure 8 for Figure 1 A schematic diagram showing the hidden pressure wheel.

[0026] Figure 9 for Figure 8 A magnified schematic diagram of the structure of part B in the middle.

[0027] Figure 10 for Figure 8 A schematic diagram of the structure behind the hidden seed box.

[0028] Figure 11 for Figure 10 A magnified schematic diagram of the structure of part C in the middle.

[0029] Figure 12 A schematic diagram of installing a closure cover on the opening of the protective cover. Detailed Implementation

[0030] Embodiments of the present invention are described in detail below, examples of which are illustrated in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and intended to explain the present invention, and should not be construed as limiting the present invention.

[0031] In the description of this invention, it should be understood that the terms "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this invention.

[0032] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this invention, "a plurality of" means two or more, unless otherwise explicitly specified.

[0033] In this invention, unless otherwise explicitly specified and limited, the terms "installation," "connection," "linking," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this invention according to the specific circumstances.

[0034] This invention discloses a special wheat planter for cotton-wheat intercropping, comprising: Frame 1, which is connected to the tractor unit via a suspension frame on it; Transmission box 2 is fixed on frame 1. The input end of transmission box 2 is connected to the output end of tractor vehicle through universal joint 3. The ridging shaft 4 is rotatably mounted at the bottom of the frame 1. The ridging shaft 4 is connected to the first output end of the transmission box 2 through the first transmission mechanism 5. Two full-row ridging discs 6 are fixed at intervals in the middle of the ridging shaft 4. The two full-row ridging discs 6 are used to rid a full row of cotton ridges 7. Half-row ridging discs 8 are fixed near both ends of the ridging shaft 4. The half-row ridging discs 8 are used to rid a half row of cotton ridges 7. The half-row ridging discs 8 cooperate with the half-row ridging discs 8 when the seeder returns to sowing to rid a full row of cotton ridges 7. The space between the full-row ridging discs 6 and the adjacent half-row ridging discs 8 defines the wheat sowing row 9. The cotton ridge 7 is located between two wheat sowing rows 9. Wheat sowing mechanism 10 is mounted on frame 1 and is used to sow wheat on two wheat sowing rows 9.

[0035] The working process of the above scheme is as follows: The tractor is connected to the frame 1 via a suspension bracket, driving the entire machine forward. The tractor's power take-off shaft inputs rotational power into the transmission box 2 via a universal joint 3. Inside the transmission box 2, power is split through a gear set, with the first output end transmitting power to the ridging shaft 4 via a first transmission mechanism 5 (such as a chain, belt, or gearbox).

[0036] The ridging shaft 4 rotates at a set speed (usually matched to the forward speed) driven by the transmission box. Two sets of different types of ridging discs are fixed on the shaft: Two full-row ridging discs 6 are fixed in the middle of the ridging shaft 4, with the distance between them equal to the designed width of the cotton ridge 7 for the following year (e.g., 55cm). The full-row ridging discs 6 are disc-shaped or frustum-shaped, with specific curved or inclined surfaces on their surfaces. When the ridging shaft 4 rotates, the full-row ridging discs 6 rotate with the shaft, and their inclined surfaces push and gather the soil on both sides towards the middle. At the same time, the discs and the ridging shaft 4 compact the soil, forming a complete cotton ridge 7 with a trapezoidal or arched cross-section. The number and spacing of the full-row ridging discs 6 can be adjusted according to design requirements; for example, two or more sets can be set to accommodate multi-strip intercropping patterns.

[0037] Two half-row ridging discs 8 are fixed at both ends of the ridging shaft 4, near the sides of the frame 1. The structure of the half-row ridging disc 8 is similar to that of the full-row ridging disc 6, but its soil-gathering slope is only designed on one side. When rotating, the half-row ridging disc 8 pushes the soil from the inside to the outside, forming a cross-section of half a cotton ridge 7—that is, half of a ridge, and the outer edge of the ridge is the working boundary of the seeder.

[0038] As the seeder moves forward, the four ridging discs rotate synchronously, performing the following actions simultaneously: Two central ridging trays 6 create a complete cotton ridge 7 in the center of the field; The half-row ridging plates 8 on both sides of the field each raise half a cotton ridge 7, and the outer side of the half ridge is the boundary of the field or the connecting surface with the next operation.

[0039] The strip of land between the full-row ridging disc 6 and the adjacent half-row ridging disc 8 (i.e., the space between two cotton ridges) is not disturbed by the ridging discs. During rotation, the ridging discs only accumulate soil in the cotton ridge area and do not send soil into it, thus keeping the area flat and naturally forming two wheat sowing rows 9. The wheat sowing mechanism 10 then performs sowing operations on these two sowing rows 9.

[0040] Key connecting action: When the seeder completes its first pass and turns back for the second pass, the second half-row ridging disc 8 is adjacent to and parallel to the first half-row ridging disc 8. The two half-row ridging discs 8 work together to push the soil at their adjacent points, forming a complete cotton ridge 7. In this way, after the back-and-forth operation, the entire field forms a standardized intercropping pattern of alternating "wheat strip—cotton ridge—wheat strip—cotton ridge..." The width of the wheat strip and cotton ridge is precisely determined by the layout of the ridging discs, without the need for manual marking or subsequent adjustments.

[0041] The technical effects of the above technical solution are: (1) Achieving “wheat sowing and cotton planting in one go”: In the traditional operation process, wheat needs to be sown first, and cotton ridging and sowing will be carried out separately in the following spring. This solution integrates the ridging tray and sowing mechanism to prepare the ridges needed for cotton planting in the following year while sowing wheat, combining the field operations of the two seasons into one go, which greatly reduces the number of operations and labor input.

[0042] (2) Precise and controllable width of reserved cotton rows: The distance between the full-row ridging tray 6 and the half-row ridging tray 8 is fixed during the design and manufacturing process. This distance directly determines the relative position between the wheat sowing row 9 and the cotton ridge 7. Compared with manual marking or temporary modification, this mechanical positioning method controls the width error of the reserved cotton rows to the centimeter level, ensuring that the growth space of the two crops under the intercropping mode precisely meets the agronomic requirements.

[0043] (3) Seamless connection between round trip operations: The design of the half-row ridging disc 8 fully considers the connection problem when the seeder is operating back and forth. The half-rows of the two operations are automatically combined into a complete ridge at the adjacent points, avoiding the phenomenon of "missed ridging" or "overlap" between adjacent operations in traditional operations, and ensuring the continuity and consistency of cotton ridges in the whole field.

[0044] (4) Reduce soil disturbance and protect seedbed: The ridging tray only performs soil accumulation operation on the cotton ridge area, while not turning over the wheat sowing row 9 area, thus preserving the original soil structure and moisture of the area to the greatest extent, providing a good germination and seedling environment for wheat seeds.

[0045] In some embodiments, the device further includes two press rollers 11 disposed on the rear side of the frame 1. The two press rollers 11 correspond one-to-one with the positions of the two wheat sowing rows 9. The roller shafts of the press rollers 11 are connected to the shared rotating shaft 103 of the wheat sowing mechanism 10 via the second transmission mechanism 12.

[0046] Two press rollers 11 are installed on the rear side of the frame 1. The installation positions of the two press rollers 11 correspond one-to-one with the two wheat sowing rows 9, that is, the center line of the press roller 11 is aligned with the center line of the sowing row 9 in the vertical direction. The press rollers 11 are mounted on the frame 1 through bearing seats and can rotate freely.

[0047] The roller shaft of the press roller 11 is connected to the shared rotating shaft 103 of the wheat sowing mechanism 10 via a second transmission mechanism 12. The second transmission mechanism 12 can be a chain drive, a synchronous belt drive, or a gear drive. Specifically, a sprocket or pulley is fixed on the roller shaft of the press roller 11, and a corresponding sprocket or pulley is also fixed on the shared rotating shaft 103. The two are connected by a chain or a synchronous belt.

[0048] As the seeder moves forward, the press roller 11 contacts the soil surface. Due to the downward pressure of the frame 1 (which can be adjusted by a spring or hydraulic mechanism) and the weight of the press roller 11 itself, the press roller 11 rolls close to the ground. The rolling of the press roller 11 is pure rolling friction, with no relative sliding, so its linear velocity is exactly equal to the forward speed of the seeder.

[0049] The rolling motion of the press roller 11 transmits rotational motion to the shared shaft 103 via the second transmission mechanism 12. After the shared shaft 103 rotates, it drives the external grooved wheel seed metering device 102 connected to it to work. The seed metering volume of the external grooved wheel seed metering device 102 is proportional to its rotational speed, which in turn is proportional to the forward speed of the seeder. Therefore, automatic synchronization between the seed metering speed and the sowing speed is achieved—when the forward speed increases, the seed metering speed automatically increases; when the forward speed decreases, the seed metering speed automatically decreases; and when the seeder stops, the seed metering automatically stops.

[0050] Simultaneously, the press roller 11 compacts the wheat rows 9 after sowing during its rolling process. The surface of the press roller 11 can be smooth, have raised dots, or have annular grooves, and its compaction force is adjusted by a spring or hydraulic pressure. The compaction action tightly binds the soil around the seeds, eliminating large gaps between the seeds and the soil, forming capillary channels, which facilitates the rise of deep soil moisture to the seed layer through capillary action, promoting seed germination. At the same time, the compacted soil surface is smoother, reducing water evaporation.

[0051] The effects of the above technical solution are: (1) Consistent sowing depth and uniform emergence: The roller 11 compacts the sowing rows, making the seeds in close contact with the soil, eliminating the problem of seeds being suspended or at different depths due to loose soil. After compaction, the soil bulk density of the seed layer tends to be uniform, the moisture and temperature conditions are uniform, the uniformity of emergence is significantly improved, and the phenomenon of missing seedlings and broken rows is avoided.

[0052] (2) Ground wheel drive and good synchronization: The press roller 11 also serves as the power source for the sowing mechanism. Compared with the traditional tractor power take-off shaft driven seed metering device, this "ground wheel drive" method has a natural speed synchronization advantage. No matter how the tractor's forward speed changes, the seeding speed always maintains a precise proportional relationship with the forward speed, avoiding the problems of missed sowing (insufficient seeding when the speed is too fast) or double sowing (excessive seeding when the speed is too slow) caused by speed changes.

[0053] (3) Simplified structure and reduced cost: Traditional seeders require a separate drive wheel, which drives the seed metering device through a chain or gear, increasing the number of parts and the overall length of the machine. This solution combines the compaction roller 11 with the drive wheel into one, "one roller for two purposes", which not only completes the compaction operation after sowing, but also provides the driving force for seed metering, reducing the number of parts, manufacturing costs and maintenance difficulty.

[0054] (4) Reduced operation steps: The compaction operation is completed simultaneously with the sowing operation, eliminating the need for separate post-sowing compaction, reducing the number of times the tractor enters the field, lowering the risk of soil compaction, and saving operation time and fuel consumption.

[0055] In some embodiments, the wheat seeding mechanism 10 includes: Seed box 101 is fixed on frame 1 and located behind transmission box 2. Multiple seed outlets of seed box 101 are fixed with external groove wheel seed metering device 102. Multiple external groove wheel seed metering devices 102 are connected by a shared rotating shaft 103. The double-disc furrow opener 104 consists of multiple double-disc furrow openers set above the wheat sowing row 9. Each double-disc furrow opener 104 is detachably mounted on the crossbeam 13 of the frame 1 via a U-shaped clamp 105. The seed outlet of each double-disc furrow opener 104 is connected to the seed outlet of the corresponding outer groove wheel seed metering device 102 via a seed delivery pipe 106.

[0056] The wheat sowing mechanism 10 consists of a seed box 101, an outer groove wheel seed metering device 102, a shared rotating shaft 103, a double disc furrow opener 104, a U-shaped clamp 105, a seed conveying pipe 106, and other components.

[0057] Adjustments before the assignment: The number of wheat planting rows 9, row spacing, and width of the wheat planting strip are determined according to the intercropping pattern (such as "3-2" or "4-2"). The operator loosens the locking screws on the U-shaped clamps 105 and slides multiple double-disc furrow openers 104 along the crossbeam 13 of the frame 1 to the predetermined position. Each double-disc furrow opener 104 corresponds to one row of wheat planting rows 9. After adjustment, the screws on the U-shaped clamps 105 are tightened to firmly fix the double-disc furrow openers 104 to the crossbeam 13. This U-shaped clamp fixing method allows the double-disc furrow openers 104 to be positioned at any location on the crossbeam 13, achieving stepless adjustment of the row spacing.

[0058] The work process in the assignment: The press roller 11 drives the shared shaft 103 to rotate via the second transmission mechanism 12. Multiple external grooved wheel seed metering devices 102 are connected in series on the shared shaft 103, each corresponding to a seed outlet of the seed box 101. Seeds in the seed box 101 fall into the seed grooves of the external grooved wheel seed metering devices 102 under the influence of gravity.

[0059] When the shared shaft 103 rotates, the outer groove wheel inside the outer groove wheel seed metering device 102 rotates accordingly. The grooves on the outer groove wheel carry the seeds out of the seed box and quantitatively drop them into the seed metering port. The seed metering rate of the outer groove wheel seed metering device 102 can be adjusted by adjusting the rotation speed of the outer groove wheel or changing the model of the groove wheel to adapt to the seeding rate requirements of different wheat varieties.

[0060] After exiting the seed outlet, the seeds enter the seed delivery tube 106. The seed delivery tube 106 can be flexible or rigid, guiding the seeds to the seed inlet of the double-disc furrow opener 104. The double-disc furrow opener 104 consists of two inclined discs, whose front ends meet at the bottom to form an acute-angled entry point into the soil. A gap is left between the two discs to form a channel for the seeds to fall.

[0061] As the seeder moves forward, the double-disc furrow opener 104 cuts a V-shaped trench in the soil. The double-disc design gives it excellent soil penetration and maneuverability—as the two discs rotate, they push the soil to both sides, forming a clear trench. The trench depth is controlled by the furrow opener's soil penetration depth adjustment mechanism (such as a depth limiting wheel or spring adjustment rod), typically between 3 and 5 cm.

[0062] After the seeds fall into the bottom of the furrow from the seed outlet, as the seeder continues to move forward, the soil covering device behind the double-disc furrow opener 104, usually a drag chain or a soil covering wheel, pushes the soil back from both sides of the furrow to cover the seeds. Subsequently, the press roller 11 compacts the seeding row, completing the sowing operation.

[0063] The effects of the above technical solution are: (1) Adjustable row spacing and adaptability to multiple intercropping patterns: The combination of U-shaped clamp 105 and crossbeam 13 allows the position of double disc furrow opener 104 to be adjusted arbitrarily along the crossbeam. This design enables the same seeder to quickly adapt to multiple intercropping patterns such as "3-2" (3 rows of wheat + 2 rows of cotton), "4-2" (4 rows of wheat + 2 rows of cotton), and "6-2", as well as different requirements for wheat row spacing in different regions and for different varieties, greatly improving the versatility and adaptability of the machine.

[0064] (2) High sowing precision: The external groove wheel seed metering device 102 is a mature and reliable seed metering mechanism in agricultural machinery. It has good seed metering uniformity and stable seeding rate, and has good adaptability to seeds of different sizes (from large wheat to small rapeseed). Combined with the precise furrowing of the double disc furrow opener 104, it ensures consistent sowing depth and uniform plant spacing, laying the foundation for full and strong wheat seedlings.

[0065] (3) Good passability and adaptability to complex plots: Compared with traditional hoe-type furrow openers, the double-disc furrow opener 104 has a stronger ability to cut straw and stubble. In cotton-wheat intercropping plots, cotton stalks and stubble will remain after the previous cotton harvest. The double-disc furrow opener 104 can cut off these residues, avoid the furrow opener getting stuck with straw or blocked, and ensure the continuity and reliability of sowing operations.

[0066] (4) Easy maintenance: The U-shaped clamp 105 makes it very easy to disassemble and assemble the double disc trencher 104. When it is necessary to replace the worn disc or perform maintenance, simply loosen the screws of the U-shaped clamp 105 to remove the double disc trencher 104 from the crossbeam 13 without disassembling other parts, which makes maintenance efficient.

[0067] In another embodiment of the present invention, a central pipe-laying device 14 and two side pipe-laying devices 15 are also provided on the frame 1. The central pipe-laying device 14 is used to lay drip irrigation pipes on the entire row of cotton ridges 7, and the side pipe-laying devices 15 are used to lay drip irrigation pipes on half rows of cotton ridges 7.

[0068] A central pipe-laying device 14 and two side pipe-laying devices 15 are simultaneously installed on frame 1. These three pipe-laying devices correspond one-to-one with the positions of the ridging pan. The middle pipe-laying device 14 is located directly behind the two whole-row ridging discs 6, and its laying path is aligned with the center line of the whole-row cotton ridge 7. The two side-laying pipe devices 15 are located directly behind the two half-row ridging trays 8, and their laying paths are aligned with the center lines of the two half-row cotton ridges 7.

[0069] As the seeder moves forward, the ridging discs 6 and 8 first complete the ridging of the cotton ridge 7, forming a ridge with a certain height and shape. Subsequently, the pipe-laying devices 14 and 15 follow closely behind, laying drip irrigation pipes on the newly formed cotton ridge 7.

[0070] Working process of the central pipe-laying device 14: The central pipe-laying device 14 lays a drip irrigation pipe in the center of the entire cotton ridge 7. The drip irrigation pipe is released from the pipe roll, guided by a guiding mechanism, pressed into a shallow furrow in the center of the ridge, and then covered with soil. Since the entire cotton ridge 7 is intact, the drip irrigation pipe is laid at the top center of the ridge, so that when cotton is sown the following year, seeds can be sown on either side or directly above the drip irrigation pipe, achieving precision irrigation.

[0071] Working process of the side-laying pipe device 15: Two side-laying devices 15 lay drip irrigation pipes in the center of each of the two half-row cotton ridges 7. Since the half-row cotton ridge 7 is only half the width of a full ridge, the drip irrigation pipes are laid in the center of the half-row. When the seeder returns for the second pass, the two half-row cotton ridges merge into one full cotton ridge, and the drip irrigation pipes laid by the two side-laying devices 15 are also placed in the center of the merged full cotton ridge—but at this time, there are two drip irrigation pipes side by side in the center. In practical applications, it is possible to choose to use only one side of the laying device, or to retain two drip irrigation pipes according to irrigation needs to improve irrigation uniformity.

[0072] The laying of drip irrigation pipes is carried out simultaneously with wheat sowing, completing the three tasks of wheat sowing, cotton ridging, and drip irrigation pipe laying in one operation. The ends of the drip irrigation pipes are reserved with connection joints and marked, so that they can be directly connected to the water source and fertilizer system when cotton is planted the following year, without the need to dig trenches and bury pipes again.

[0073] The effects of the above technical solution are: (1) Pre-implementation of water and fertilizer integration: While sowing wheat, drip irrigation systems are laid in advance for cotton in the following year, so that the irrigation preparation work that originally belonged to the cotton planting season is completed in advance during the wheat sowing season. This "cross-season operation" integration reduces the separate operation links when planting cotton in the following year and alleviates the labor shortage problem during the busy spring farming season.

[0074] (2) Precision irrigation layout: The position of the drip irrigation pipe corresponds precisely to the cotton ridge 7, which is mechanically guaranteed by the relative position of the ridge-forming plate and the pipe-laying device, avoiding the offset and twisting problems that may occur during manual laying. The drip irrigation pipe is buried in the center of the ridge surface, and the water flow can directly act on the cotton root distribution area, resulting in high irrigation water utilization and avoiding the waste caused by water diffusion to the wheat belt.

[0075] (3) Reduced labor intensity in the later stages: After the drip irrigation pipes are laid in place once, when planting cotton the following year, cotton farmers only need to find the reserved drip irrigation pipe joints and connect the water source to put them into use, without having to carry out the work of laying drip irrigation pipes separately. For large-scale growers, 1-2 working days can be saved per mu, which significantly reduces labor costs.

[0076] (4) Protecting the drip irrigation pipes and extending their service life: The drip irrigation pipes are covered with soil during installation, which avoids ultraviolet aging caused by exposure to sunlight and also prevents birds or small animals from pecking and damaging them. The service life of buried drip irrigation pipes is usually 2-3 years longer than that of surface-laid pipes.

[0077] Specifically, the central pipe-laying device 14 has the same structure as the two side pipe-laying devices 15, wherein the side pipe-laying device 15 includes: Tube shaft bracket 151 is mounted on frame 1; Support beam 152 is fixed to the side of frame 1. Support beam 152 is fitted with upper pipe guide sleeve 153 and lower pipe guide sleeve 154. The bottom end of support beam 152 is provided with guide pressure roller 155. The drip irrigation pipe on pipe shaft frame 151 passes through upper pipe guide sleeve 153 and lower pipe guide sleeve 154 in sequence and is pressed under the guide pressure roller 155.

[0078] Installation and conduit installation: The pipe shaft bracket 151 is fixed on the frame 1, and a drip irrigation pipe reel can be installed on it. The drip irrigation pipe reel is connected to the pipe shaft bracket 151 via a bushing, allowing it to rotate freely to release the pipe. The operator pulls the end of the drip irrigation pipe from the reel and first passes it through the upper pipe guide sleeve 153. The upper pipe guide sleeve 153 is a circular or semi-circular guide, with an inner diameter slightly larger than the outer diameter of the drip irrigation pipe, constraining the direction of the drip irrigation pipe within a vertical plane and preventing it from swinging left and right.

[0079] After the drip irrigation tube exits through the upper guide sleeve 153, it continues downward, passing through the lower guide sleeve 154. The structure of the lower guide sleeve 154 is similar to that of the upper guide sleeve 153, but its position is closer to the guide roller 155. The lower guide sleeve 154 further constrains the direction of the drip irrigation tube, ensuring that it is precisely aligned with the center of the pressure groove of the guide roller 155.

[0080] After the drip irrigation tube passes through the guide sleeve 154, it is guided to the area below the guide roller 155. The guide roller 155 is a roller with an arc-shaped groove, the curvature of which matches the outer diameter of the drip irrigation tube. The drip irrigation tube is embedded in the groove and pressed down by the guide roller 155.

[0081] The work process in the assignment: As the seeder moves forward, the guide roller 155 rolls on the surface of the cotton ridge 7. The guide roller 155 applies pressure to the drip irrigation pipe. Under the pressure, the guide roller 155 presses the drip irrigation pipe into the soil on the ridge surface, forming a shallow furrow in which the drip irrigation pipe is embedded.

[0082] The working process of the middle pipe-laying device 14 is the same as that of the side pipe-laying device 15. The only difference is that it is installed in the middle of the frame 1, corresponding to the whole row of cotton ridges 7, and its support beam structure may be slightly longer to adapt to the middle position.

[0083] The effects of the above technical solution are: (1) Precise laying path: The upper and lower pipe guide sleeves 153 and 154 form a "double-point constraint" system to ensure that the direction of the drip irrigation pipe is precisely restricted before entering the guide pressure roller 155. This design effectively prevents the drip irrigation pipe from swinging left and right due to tension changes or vibrations during the laying process, and ensures that the drip irrigation pipe is always laid along the center line of the cotton ridge 7.

[0084] (2) Consistent burial depth: The guide roller 155 controls the burial depth through a mechanical limiting structure, which is not affected by the looseness of the soil. Compared with manual burial (which varies in depth), mechanical burial ensures the consistency of the burial depth of the drip irrigation pipe throughout the field, which is conducive to the uniform distribution of irrigation water and also avoids the drip irrigation pipe being scraped up or exposed due to burial being too shallow.

[0085] (3) Compact structure and high integration: The pipe laying device is integrated with the seeder, which does not occupy extra space or increase the working width. The drip irrigation pipe reel can be installed on the top or side of the frame. The center of gravity of the whole machine is reasonably distributed, which does not affect the operation stability and passability of the seeder.

[0086] (4) Adaptable to different drip irrigation pipe specifications: The dimensions of the upper pipe guide sleeve 153, the lower pipe guide sleeve 154 and the guide pressure roller 155 can be selected or replaced according to the outer diameter of the drip irrigation pipe to adapt to different specifications of drip irrigation pipes such as 16mm and 20mm, and meet the needs of different irrigation systems.

[0087] Specifically, the bottom of the support beam 152 is provided with a soil covering wheel 156 for burying drip irrigation pipes on the rear side of the guide roller 155.

[0088] In this example, a covering wheel 156 is installed at the bottom of the support beam 152, behind the guide roller 155 (i.e., behind the seeder in the forward direction). The covering wheel 156 is usually designed in a disc or conical shape, with two covering wheels arranged symmetrically, or a V-shaped wheel with its two sides inclined inward.

[0089] After the drip irrigation pipe is pressed into the shallow furrow by the guide roller 155, the seeder continues to move forward. The drip irrigation pipe remains exposed (although covered by the shallow furrow, the soil has not been completely backfilled). The covering roller 156 then passes this position.

[0090] As the covering wheel 156 moves forward, it rotates, and its inclined surface pushes and gathers the soil from both sides of the shallow trench inward. During this process, the drip irrigation pipes are covered by the soil. The covering depth of the covering wheel 156 can be controlled by adjusting its relative height to the guide roller 155—lowering the position of the covering wheel 156 increases the amount of soil covered; raising it decreases the amount of soil covered.

[0091] Typically, the covering wheel 156 covers the drip irrigation pipes with a 2-3 cm thick layer of soil. This thickness ensures the drip irrigation pipes are securely fixed and won't be carried out of the ground by wind or water flow, while also preventing excessive soil cover from affecting the location and connection of the drip irrigation pipes during cotton sowing the following year. Simultaneously, the covering wheel 156 provides some compaction to the covered soil, ensuring a tight seal between the soil and the drip irrigation pipes, reducing water evaporation and gaps around the pipes.

[0092] The effects of the above technical solution are: (1) The drip irrigation pipe is reliably fixed: If the drip irrigation pipe is pressed into the soil by the guide roller 155 alone, the drip irrigation pipe may still float out of the ground due to soil rebound or vibration of subsequent operations. The cover roller 156 covers the soil by actively pushing the soil to firmly bury the drip irrigation pipe in the soil. Even under conditions of strong wind or loose soil, the drip irrigation pipe can maintain a stable position.

[0093] (2) Reduced maintenance workload: After the drip irrigation pipes are properly buried, they are not easily blown by the wind, pecked by birds, or damaged by small animals. Before cotton sowing in the following year, the drip irrigation system can be put into use directly without the need for re-laying or repair, which reduces the workload of field management and maintenance.

[0094] (3) Improved irrigation uniformity: The soil covering wheel 156 has a uniform thickness, which makes the water distribution around the drip irrigation pipe consistent. When the irrigation water flows out from the dripper, the horizontal and vertical diffusion paths of the water in the soil are consistent, which is conducive to the formation of a uniform wetting front and improves irrigation uniformity.

[0095] (4) Simple structure and maintenance-free: The soil covering wheel 156 adopts a non-powered rotation design, relying on the friction with the soil to rotate. It does not require an additional transmission mechanism, has a low failure rate, and extremely low maintenance cost.

[0096] In some embodiments, a cantilever beam 16 is fixed to the side of the frame 1, and an mounting sleeve 17 is provided on the cantilever beam 16. The support beam 152 passes through the mounting sleeve 17 and is fixed by screws.

[0097] A cantilever beam 16 is fixed to the side of the frame 1. The cantilever beam 16 extends horizontally outward from the frame, and a mounting sleeve 17 is provided at its end. The mounting sleeve 17 is a hollow cylindrical structure, and its axial direction can be set to vertical or slightly inclined as needed.

[0098] The support beam 152 of the side-laying pipe device 15 is a cylindrical or square rod, and its outer diameter matches the inner diameter of the mounting sleeve 17 (clearance fit). The operator inserts the support beam 152 into the mounting sleeve 15 and adjusts the extension length of the support beam 152 as needed, so that the guide roller 155 and the soil-covering roller 156 of the side-laying pipe device 15 descend to the predetermined position of the half-row cotton ridge 7. After adjustment, the locking screws on the side of the mounting sleeve 17 are tightened. The heads of the locking screws press against the outer wall of the support beam 152, fixing the support beam 152 inside the mounting sleeve 17 through friction, preventing displacement due to vibration during operation.

[0099] Therefore, the depth of the guide roller 155 and the soil covering roller 156 on the cotton ridge 7 can be adjusted by the above scheme to achieve precise laying of drip irrigation pipes.

[0100] The special wheat seeder for cotton-wheat intercropping also includes a rotary tiller shaft 18 rotatably mounted on the front side of the frame 1. The rotary tiller shaft 18 is connected to the second output end of the transmission box 2 via a third transmission mechanism 19. Multiple rotary tillers 20 are fixed on the rotary tiller shaft 18.

[0101] The transmission box 2 splits the power from the tractor into multiple paths, with the second output end connected to the rotary tiller shaft 8 via the third transmission mechanism 19. The third transmission mechanism 19 can be a belt drive (with a buffering effect to protect the rotary tiller from slippage when encountering hard objects), a chain drive (high transmission efficiency and compact structure), or a gearbox drive (high reliability and suitable for high power transmission).

[0102] The rotary tiller shaft 18 is rotatably mounted on the lower front side of the frame 1, spanning the width of the entire machine, and its two ends are fixed to the side plates of the frame 1 by bearing seats. The rotary tiller shaft 18 rotates at high speed under the drive of the transmission box 2, usually at a speed of 200-400 rpm (the specific speed is adjusted according to soil conditions and operating speed).

[0103] The rotary tiller blades 20 are fixed to the rotary tiller shaft 18 in a spiral or symmetrical arrangement. The spiral arrangement facilitates continuous cutting and backward throwing of the soil, reducing power consumption; the symmetrical arrangement balances the forces on the rotary tiller shaft 18, reducing vibration. The rotary tiller blades 20 are curved or straight blades, and the blade tips are heat-treated to improve wear resistance.

[0104] As the seeder moves forward, the rotary tiller shaft 18 rotates at high speed, and the tips of the rotary tiller blades 20 cut into the soil at a high linear velocity (usually 5-10 m / s). The rotary tiller blades 20 complete a continuous action of "cutting soil - breaking up soil - throwing soil": first, cutting the soil off the surface, then breaking up the soil clods, and finally throwing the broken soil backward and upward, landing behind the rotary tiller shaft 18.

[0105] The rotary tillage depth is typically 10-15 cm, which can be controlled by adjusting the height of the rotary tiller blade shaft 18 off the ground or the suspension posture of the frame 1. During rotary tillage, the rotary tiller blades 20 simultaneously chop up the cotton stalks and root stubble remaining on the ground and mix them thoroughly with the soil, promoting the decomposition of the straw.

[0106] The rotary tiller shaft 18 is located in front of the ridging shaft 4 and the sowing mechanism 10. Therefore, the working sequence of the whole machine is: rotary tillage and soil breaking → ridging and shaping → sowing wheat, while laying drip irrigation pipes → compaction, forming a complete compound operation process. This sequential arrangement ensures that the quality of the next process is not affected by the previous process—rotary tillage first, then ridging, with the ridging disc operating on loose soil, resulting in higher ridging quality.

[0107] The effects of the above technical solution are: (1) Integrated land preparation and sowing: Rotary tillage and sowing are completed in one operation, combining the two processes that originally required "rotary tillage first and then sowing" into one. This compound operation mode reduces the number of times the tractor enters the field, reduces the degree of soil compaction (each entry into the field will cause different degrees of soil compaction), and at the same time reduces the operation time and improves the utilization rate of agricultural time.

[0108] (2) Improving seedbed quality: The rotary tiller 20 breaks up and levels the topsoil, forming a loose and fine seedbed. The double-disc furrow opener 104 opens furrows on such a seedbed, with regular furrow shape and furrow walls that are not easy to collapse, which is conducive to the seeds falling to the predetermined depth. The loose seedbed is also conducive to the root system to grow downward after seed germination, promoting the vigorous growth of seedlings.

[0109] (3) Straw return to the field assistance: The previous crop of cotton-wheat intercropping plots is cotton, and cotton stalks and root stubble will remain after harvest. If these residues are not properly treated, they will hinder sowing operations and affect the contact between seeds and soil. The rotary tiller 20 chops up the cotton stalks and mixes them into the soil, which not only eliminates the obstacle to sowing, but also realizes the return of straw to the field and increases soil organic matter.

[0110] (4) Improve work efficiency: The five processes of rotary tillage, ridging, sowing, compaction and pipe laying are completed in one go. Compared with the traditional step-by-step operation, it can save 30-50 minutes of work time per mu and reduce fuel consumption by more than 20%. For large-scale farmers, the economic benefits are significant.

[0111] The frame 1 has a protective cover 21 with a bottom opening located on the outside of the rotary tiller blades 20.

[0112] The protective cover 21 is fixed to the frame 1 and located outside the rotary tiller 20. The protective cover 21 is usually made of welded or stamped steel plate, and its shape matches the rotation envelope of the rotary tiller shaft 18. It is generally a shell with a semi-circular or U-shaped cross section.

[0113] The protective cover 21 completely encloses the rotary tiller shaft 18 and the rotary tiller blades 20, leaving only a bottom opening for the rotary tiller blades 20 to contact the soil. The front and rear ends of the protective cover 21 extend to the front and rear of the rotary tiller shaft 18, the sides are closed, and the top is connected to the frame 1.

[0114] The inner wall of the protective cover 21 maintains a certain safe gap (usually 2-5cm) with the tip of the rotary tiller 20 to ensure that the rotary tiller 20 does not interfere with the protective cover 21 during rotation. The bottom opening of the protective cover 21 is slightly wider than the working width of the rotary tiller shaft 18 to ensure that the rotary tiller 20 can fully contact the soil.

[0115] During operation, the rotary tiller blades 20 rotate at high speed, chopping up the soil and straw and throwing them backward. The protective cover 21 effectively limits the range of soil and debris splashing—the thrown soil and debris hit the inner wall of the protective cover 21, are blocked, and fall back to the ground without splashing outward.

[0116] The effects of the above technical solution are: Operational Safety: The rotary tiller blades 20 generate significant kinetic energy during high-speed rotation. If operators or nearby personnel inadvertently approach, it could result in serious injury. The protective cover 21 physically isolates the rotating components from the external environment, effectively preventing accidental contact. Simultaneously, the protective cover 21 also prevents flying soil, gravel, or straw fragments from injuring operators or nearby personnel.

[0117] Reduce dust pollution: Rotary tillage generates a lot of dust, especially when working in dry fields. The protective cover 21 confines the dust to a smaller space, reducing its outward spread, improving the working environment for operators, and also reducing pollution to the surrounding environment.

[0118] Preventing debris entanglement: During field operations, residual straw, plastic film, and other debris may become entangled on the rotary tiller shaft 18. The protective cover 21 prevents long straw and other debris from being rolled in from the side to a certain extent, reducing the probability of entanglement failure.

[0119] Protecting the rotary tillage components: The protective cover 21 prevents the rotary tillage blades 20 from colliding with other objects and causing damage during transportation and relocation. At the same time, the protective cover 21 also reduces the direct corrosion of the bearings of the rotary tillage blade shaft 18 by mud, sand, and rainwater, extending the service life of the components.

[0120] In some embodiments, the opening of the protective cover 21 is detachably fitted with a closing cover 22.

[0121] The bottom opening of the protective cover 21 is provided with a detachable and installable enclosure 22. The enclosure 22 is a cover plate that matches the shape of the bottom opening of the protective cover 21, and its edge is connected to the edge of the opening of the protective cover 21 by bolts, clips, hooks or quick clamps.

[0122] Operating conditions for installing enclosure 22: When the seeder is operating on a prepared plot of land (where the soil is loose enough that further rotary tillage is unnecessary), the operator installs the enclosure 22 onto the bottom opening of the protective cover 21, completely enclosing the rotary tillage blades 20 within the protective cover 21. At this time, the rotary tillage blades 20 do not come into contact with the soil, and the seeder only performs ridging, sowing, compaction, and pipe laying operations.

[0123] The working condition for removing enclosure 22: When the seeder is operating in fields with a large amount of previous crop residue and compacted soil, the rotary tillage function needs to be activated. The operator removes the enclosure 22 to expose the rotary tillage blades 20. At this time, the rotary tillage blades 20 come into contact with the soil and perform rotary tillage and soil breaking operations.

[0124] Relocation and transportation conditions: When the seeder is transported over long distances on highways, a closed cover 22 is installed to prevent the rotary tiller blades 20 from rotating accidentally due to vibration or bumps during the journey, and also to prevent the rotary tiller blades 20 from being damaged by collisions with the road surface or other objects.

[0125] The installation and removal of the enclosure 22 can be completed in minutes without special tools, making the operation simple and quick.

[0126] The effects of the above technical solution are: (1) Flexible function switching: The same seeder can flexibly choose whether to use the rotary tillage function according to the plot conditions and agronomic requirements. In plots with loose soil and good previous crop treatment, the rotary tillage function is not needed to reduce unnecessary wear and tear on the machine; in plots with compacted soil and a lot of straw residue, the rotary tillage function can improve the quality of the seedbed. This "one machine for two purposes" design improves the utilization rate and adaptability of the machine.

[0127] (2) Reduce unnecessary wear: The rotary tiller blade 20 is a wear part, and its service life is usually calculated based on the number of acres worked. When rotary tillage is not required, the rotary tiller blade 20 is not involved in the operation by installing the closed cover 22, which avoids unnecessary wear, extends the service life of the rotary tiller blade 20, and reduces the cost of use.

[0128] (3) Protecting the rotary tillage components: During the relocation and transportation process, the enclosure 22 isolates the rotary tillage blades 20 from the outside world, preventing the rotary tillage blades 20 from being damaged by collisions with the road surface, stones or other hard objects, such as chipping or deformation. At the same time, the enclosure 22 also prevents mud and rainwater from corroding the bearings of the rotary tillage blade shaft 18.

[0129] (4) Improved transportation safety: During road transport, exposed rotary tillers 20 may pose safety hazards to pedestrians and other vehicles. After installing the enclosure 22, all rotating parts are enclosed, complying with road transport safety regulations and avoiding legal risks. Moreover, when rotary tillage is not needed, the rotary tiller shaft 18 can be disconnected from the power source through the clutch device of the transmission box 2. However, even if the power is disconnected, the rotary tiller shaft 18 may still rotate due to inertia or vibration. After installing the enclosure 22, safety hazards caused by accidental rotation are avoided.

[0130] In summary, the effects of this invention are as follows: (1) Line spacing is infinitely adjustable, covering multiple template modes: With the U-shaped clamps 105 on the crossbeam 13 adjustable by the double-disc furrow opener 104, this seeder can quickly adapt to various intercropping patterns such as "3-2" (3 rows of wheat + 2 rows of cotton), "4-2" (4 rows of wheat + 2 rows of cotton), and "6-2". One machine can meet the agronomic needs of different regions and farmers, changing the previous dilemma of "one pattern requires one special machine".

[0131] (2) Precise shaping of reserved cotton rows to achieve integrated "wheat sowing and cotton retention": The combined layout of the full-row ridging tray 6 and the half-row ridging tray 8 allows for the ridging of cotton ridges for the following year to be completed simultaneously with wheat sowing. The reciprocating connection design of the half-row ridging tray 8 ensures seamless splicing of cotton ridges between adjacent work passes, forming a continuous and regular cotton planting belt throughout the field. The width of the reserved cotton rows is mechanically guaranteed by the spacing of the ridging trays, with an accuracy of centimeters, completely solving the pain point of traditional seeders being unable to reserve cotton rows.

[0132] (3) The rotary tillage function can be activated as needed to adapt to different previous crop conditions: With the detachable enclosure 22, the machine can flexibly choose whether to activate the rotary tillage function depending on the plot conditions. In plots with a lot of cotton stubble from the previous crop and compacted soil, the rotary tillage function can be activated for land preparation; in plots with loose soil and already prepared soil, the rotary tillage function can be deactivated to reduce wear on the implements. This "one machine, two uses" design greatly improves the machine's adaptability to different working conditions.

[0133] (4) Pipe laying is completed simultaneously, realizing the pre-implementation of water and fertilizer integration: The central pipe-laying device 14 and the side pipe-laying device 15 are used to lay drip irrigation pipes immediately after ridging. The drip irrigation pipes are precisely buried in the center of the cotton ridge, and the covering wheel 156 then covers and compacts them. When planting cotton the following year, it is only necessary to find the reserved drip irrigation pipe joint and connect it to the water source to put it into use, eliminating the need for separate drip irrigation pipe laying and saving 1-2 man-days per acre.

[0134] The various embodiments in this specification are described in a progressive manner, with each embodiment focusing on its differences from other embodiments. Similar or identical parts between embodiments can be referred to interchangeably. For the apparatus disclosed in the embodiments, since they correspond to the methods disclosed in the embodiments, the description is relatively simple; relevant parts can be referred to the method section.

[0135] The above description of the disclosed embodiments enables those skilled in the art to make or use the invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the invention. Therefore, the invention is not to be limited to the embodiments shown herein, but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A wheat seeder for cotton-wheat intercropping, characterized in that, include: A frame (1), which is connected to a tractor vehicle via a suspension frame thereon; Transmission box (2), the transmission box (2) is fixed on the frame (1), and the input end of the transmission box (2) is connected to the output end of the tractor through a universal joint (3); The ridge-raising shaft (4) is rotatably mounted at the bottom of the frame (1). The ridge-raising shaft (4) is connected to the first output end of the transmission box (2) via the first transmission mechanism (5). Two full-row ridge-raising discs (6) are fixed at intervals in the middle of the ridge-raising shaft (4). The two full-row ridge-raising discs (6) are used to raise a full row of cotton ridges (7). Half-row ridge-raising discs (8) are fixed near both ends of the ridge-raising shaft (4). The half-row ridge-raising discs (8) are used to raise half rows of cotton ridges (7). The half-row ridge-raising discs (8) cooperate with the half-row ridge-raising discs (8) when the seeder returns to sowing, and are used to raise a full row of cotton ridges (7). The space between the full-row ridge-raising discs (6) and the adjacent half-row ridge-raising discs (8) defines a wheat sowing row (9). The cotton ridge (7) is located between two wheat sowing rows (9). A wheat sowing mechanism (10) is mounted on a frame (1) for sowing wheat in two wheat sowing rows (9).

2. The wheat seeder for cotton-wheat intercropping according to claim 1, characterized in that, It also includes two press rollers (11) located on the rear side of the frame (1). The two press rollers (11) correspond one-to-one with the positions of the two wheat sowing rows (9). The roller shaft of the press roller (11) is connected to the shared rotating shaft (103) of the wheat sowing mechanism (10) through the second transmission mechanism (12).

3. The wheat seeder for cotton-wheat intercropping according to claim 2, characterized in that, The wheat planting mechanism (10) includes: Seed box (101), the seed box (101) is fixed on the frame (1) and located on the rear side of the transmission box (2), and multiple seed outlets of the seed box (101) are fixed with external groove wheel seed metering devices (102), and multiple external groove wheel seed metering devices (102) are connected by a shared rotating shaft (103); Double disc furrow openers (104) are multiple ones set above the wheat sowing row (9). Each double disc furrow opener (104) is detachably installed on the crossbeam (13) of the frame (1) by a U-shaped clamp (105). The seeding port of each double disc furrow opener (104) is connected to the seeding port of the corresponding outer groove wheel seed metering device (102) through a seed delivery pipe (106).

4. The seeding machine for wheat in cotton-wheat intercropping according to any one of claims 1-3, characterized in that, It also includes a central pipe-laying device (14) and two side pipe-laying devices (15) installed on the frame (1). The central pipe-laying device (14) is used to lay drip irrigation pipes on the entire row of the cotton ridge (7), and the side pipe-laying devices (15) are used to lay drip irrigation pipes on half a row of the cotton ridge (7).

5. The wheat seeder for cotton-wheat intercropping system according to claim 4, characterized in that, The central pipe-laying device (14) has the same structure as the two side pipe-laying devices (15), wherein the side pipe-laying device (15) includes: Tube shaft holder (151), said tube shaft holder (151) is mounted on the frame (1); A support beam (152) is fixed to the side of the frame (1). An upper pipe guide sleeve (153) and a lower pipe guide sleeve (154) are fitted on the support beam (152). A guide roller (155) is provided at the bottom end of the support beam (152). The drip irrigation pipe on the pipe shaft frame (151) passes through the upper pipe guide sleeve (153) and the lower pipe guide sleeve (154) in sequence and is pressed against the lower guide roller (155).

6. The wheat seeder for cotton-wheat intercropping system according to claim 5, characterized in that, The bottom of the support beam (152) is provided with a soil covering wheel (156) for burying drip irrigation pipes on the rear side of the guide roller (155).

7. The wheat seeder for cotton-wheat intercropping system according to claim 5, characterized in that, A cantilever beam (16) is fixed to the side of the frame (1), and an installation sleeve (17) is provided on the cantilever beam (16). The support beam (152) passes through the installation sleeve (17) and is fixed by screws.

8. The wheat seeding machine for cotton-wheat intercropping according to any one of claims 1-3, 5-7, characterized in that, It also includes a rotary tiller shaft (18) rotatably mounted on the front side of the frame (1). The rotary tiller shaft (18) is connected to the second output end of the transmission box (2) via a third transmission mechanism (19). Multiple rotary tillers (20) are fixed on the rotary tiller shaft (18).

9. The wheat seeder for cotton-wheat intercropping system according to claim 8, characterized in that, The frame (1) has a protective cover (21) with a bottom opening on the outside of the rotary tiller (20).

10. A special wheat seeder for cotton-wheat intercropping according to claim 9, characterized in that, The opening of the protective cover (21) is detachably fitted with a closed cover (22).

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