A wheat harvesting and cotton planting synchronous operation integrated machine

Abstract

This invention discloses an integrated machine for simultaneous wheat harvesting and cotton sowing, comprising a harvesting system, a sowing system, and a connecting device. The connecting device is powered by the hydraulic system of the combine harvester. Wheat straw, pulverized by the harvester, is transported to the surface after the sowing machine's operation via a straw discharge port, achieving post-sowing straw removal. The sowing system can complete cotton sowing, stubble clearing, stubble breaking, furrowing, sowing, covering, and compaction in one operation. The connecting device utilizes the lateral lifting hydraulic cylinder of the steering axle main frame, with hydraulic pipelines connected in series with the lifting hydraulic cylinder on the rear wheel steering axle of the harvesting system. Power is provided by the harvester system's hydraulic circuit, and the lifting hydraulic cylinder enables synchronous steering of the harvesting system and the no-till sowing system. This integrated machine for simultaneous wheat harvesting and cotton sowing completes cotton sowing simultaneously, concentrating multiple previously scattered processes into one, effectively solving the problem of the impact of field moisture-saving operations on cotton sowing efficiency and quality in wheat-cotton rotation areas.

Description

Technical Field

[0001] This invention relates to the field of agricultural machinery and seeding equipment, and in particular to an integrated machine for simultaneous wheat harvesting and cotton sowing. Background Technology

[0002] Cotton is a major economic crop in my country, and the double cropping system of wheat and cotton is the main planting system in inland cotton-growing areas except for Xinjiang. Under this system, cotton production mainly relies on seedling transplanting (intercropping or follow-up transplanting) in nutrient pots, which is labor-intensive, labor-intensive, and technically complex. In recent years, with the development of the social economy, rural labor costs have risen sharply, cotton planting benefits have declined significantly, and the cotton acreage in inland areas has shrunk dramatically. This has seriously restricted the stable development of the cotton industry in inland areas. Direct sowing of cotton after the summer harvest, with the cotton sowing period close to the wheat harvest period, can fully realize a wheat-cotton rotation system if early-maturing wheat varieties are used, improving land utilization and increasing crop yield. At the same time, wheat straw is a natural organic fertilizer; after cotton sowing, the straw provides nutrients for cotton growth, improves soil physical and chemical properties, enhances cotton nutrition, and increases cotton yield. Therefore, realizing integrated wheat harvesting and cotton sowing is of great practical significance for reducing labor intensity and promoting the development of the cotton industry in inland areas. Summary of the Invention

[0003] The purpose of this invention is to provide an integrated machine for simultaneous wheat harvesting and cotton sowing. It utilizes a harvesting platform to harvest the grains of the previous crop in the field and pulverizes and spreads the straw onto the ground after sowing, achieving post-sowing straw removal. The harvesting system provides traction power to the sowing system, and the hydraulic system of the harvesting system provides hydraulic power to the steering axle. The connecting device has a steering axle structure, enabling synchronous steering of the harvesting and sowing systems. This effectively solves the problem of the impact of moisture-saving operations on cotton sowing efficiency and quality in wheat rotation areas.

[0004] To achieve the above objectives, the present invention provides the following solution: The present invention provides an integrated machine for simultaneous wheat harvesting and cotton sowing, comprising...

[0005] The harvesting system includes a harvesting platform, a combine harvester, and a straw discharge outlet. The previous crop in the field is picked up and cut by the harvesting platform and then cleaned and separated by the combine harvester. The crop straw discharged by the combine harvester is transported to the straw discharge outlet by a conveying system. The crop straw is discharged through the straw discharge outlet to the rear of the sowing system and covered with straw after sowing.

[0006] The linking device includes a steering axle. A traction interface is provided on the rear wheel main frame of the combine harvester. The traction interface is connected to the central tie rod in the middle of the frame of the seeding system via a pin. The front part of the central tie rod is connected to the steering axle via a lifting device. The steering cylinder of the steering axle and the lifting hydraulic cylinder of the lifting device are both connected to the hydraulic cylinder of the rear axle of the combine harvester via hydraulic oil pipes. The lifting device is used to control the lifting of the seeding system.

[0007] The seeding system includes a seed box, a seed metering device, and a heavy-duty no-till seeding unit. The heavy-duty no-till seeding unit is fixed on a single-unit crossbeam support of a central tie rod. The single-unit crossbeam support is connected to a lifting device via U-bolts. The fixed truss of the heavy-duty no-till seeding unit is connected to the frame of the combine harvester. The seed box is set on the heavy-duty no-till seeding unit, and the seed metering device is connected to the bottom of the seed box.

[0008] Preferably, a perforated mounting plate is provided at the inlet of the discharge port, the mounting plate being used to install the discharge port at the tail of the threshing and cleaning device of the combine harvester; a triangular pyramidal guide strip is provided at the outlet of the internal channel of the discharge port, and the apex of the triangular pyramidal guide strip points towards the inlet of the discharge port.

[0009] Preferably, the rear axle hydraulic cylinder of the combine harvester shown is provided with a hydraulic interface, and the steering cylinder of the steering axle and the lifting hydraulic cylinder of the lifting device are respectively connected to the hydraulic interface through hydraulic oil pipes. A hydraulic solenoid valve is installed at the hydraulic interface shown.

[0010] Preferably, the lifting device includes a lifting movable support, a lifting hydraulic cylinder, a hinge mechanism, and a base frame. The base frame is fixed to the single crossbeam support of the central tie rod of the sowing system by U-bolts. The two ends of the lifting hydraulic cylinder are respectively connected to the base frame and the lifting movable support by pins. The steering axle fixing seat of the steering axle is connected to the lifting device by pins.

[0011] Preferably, the steering axle includes a steering bridge frame, wheel frames, and steering wheels. The wheel frames are rotatably mounted at both ends of the steering bridge frame via a slewing bearing. The steering wheels are mounted on the wheel frames. A rotating main shaft passing through the slewing bearing and the steering bridge frame is provided between the wheel frames on both sides. A steering cylinder is mounted on the steering bridge frame and is used to drive the steering wheel on one side to rotate.

[0012] Preferably, a hub is fixedly connected to one side of the steering wheel, and a hub connecting rod is provided on one side of the hub. The hub connecting rod is connected to the hub through a rotating main shaft, and the hub connecting rod is hinged to the steering cylinder through a pin end.

[0013] Preferably, the system further includes a speed-following sowing system, which comprises a main controller, a radar speed measurement unit, an encoder unit, and a DC drive motor execution unit. The radar speed measurement unit measures the forward speed of the implement during operation and transmits the signal to the main controller. The encoder unit is connected to the main controller and measures the rotational speed of the DC drive motor of the seed metering device and transmits the signal to the main controller. The main controller receives signals from the radar speed measurement unit, the encoder unit, and pre-set operating parameters, processes the signals, and transmits them to the DC drive motor execution units to control the rotational speed of the DC drive motor, thereby realizing speed-following sowing operations.

[0014] The present invention achieves the following beneficial technical effects compared to the prior art:

[0015] The present invention relates to an integrated machine for simultaneous wheat harvesting and cotton sowing, comprising a harvesting system, a sowing system, and a connecting device for connecting the harvesting system and the sowing system. A wheat wheeled combine harvester provides traction power to the rear-mounted sowing system, and its hydraulic system provides power to the connecting device. A straw removal device transports the wheat straw pulverized by the harvester to the surface after the sowing machine's operation, achieving post-sowing straw removal. The sowing system employs a heavy-duty no-till planter unit with independent tracking function, capable of completing cotton sowing, stubble clearing, stubble breaking, furrowing, sowing, covering, and compaction in one operation. The connecting device mainly includes a steering axle and a traction device. The front traction rod on the sowing system is connected to the fixed hook of the rear axle of the harvesting system via a central tie rod. A lateral lifting hydraulic cylinder on the steering axle main frame is connected in series with a lifting hydraulic cylinder on the rear wheel steering axle of the harvesting system, using the hydraulic circuit of the harvester system to provide power. The lifting hydraulic cylinder enables synchronous steering of the harvesting system and the no-till sowing system.

[0016] This invention utilizes a wheeled wheat combine harvester with a sowing system to perform simultaneous combined operations within a designated work area. After harvesting wheat grains and crushing wheat straw, the harvested wheat is evenly spread on the post-sowing surface, simultaneously completing cotton sowing. This consolidates multiple previously dispersed processes into one, effectively solving the problem of reduced efficiency and quality in cotton sowing operations caused by insufficient moisture during field work in wheat-cotton rotation areas. Without altering the original structure and function of the wheeled combine harvester, this invention designs a synchronous steering axle device to connect the combine harvester and the sowing system, as well as to raise and lower the sowing system. The hydraulic circuit for lifting the combine harvester chassis provides power to the steering axle device, driving the sowing and harvesting systems to turn synchronously via the lifting hydraulic cylinder. This synchronous steering device solves the connection problem between the combine harvester and the sowing system. Simultaneously, without changing the original transmission ratio of the combine harvester, the hydraulic transmission is optimized, utilizing the combine harvester's engine to power the sowing system, thereby achieving cotton sowing and completing the sowing operation. This invention integrates multiple previously separate processes, improving operational efficiency, reducing operational costs, lowering cotton planting costs, and increasing the overall benefits of cotton cultivation. It can fully realize a wheat-cotton rotation system, and post-sowing weeding provides nutrients for cotton growth, improves soil physical and chemical properties, enhances cotton nutrition, and increases cotton yield. 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 embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0018] Figure 1 A schematic diagram of the overall structure of the integrated machine for simultaneous wheat harvesting and cotton sowing.

[0019] Figure 2 for Figure 1 Schematic diagram of the lifting device connecting the central steering axle and the seeding system;

[0020] Figure 3 for Figure 1 Schematic diagram of the servo steering axle device;

[0021] Figure 4 This is a schematic diagram of the seeding system structure;

[0022] Figure 5 This is a schematic diagram of the grass drainage outlet structure;

[0023] Figure 6 This is a schematic diagram of a cotton precision seed metering device.

[0024] The components in the diagram are labeled as follows: 1. Harvesting platform; 2. Harvester body; 3. Rear wheel of the combine harvester; 4. Steering axle; 5. Seeding system; 6. Steering wheel; 7. Rotating spindle; 8. Hub connecting rod; 9. Steering cylinder; 10. Steering axle mounting base; 11. Hub; 12. Soil covering and compaction device; 13. Cotton precision seed metering device; 14. Depth limiting wheel; 15. Double disc furrow opener; 16. Stubble breaking disc; 17. Stubble cleaning mechanism; 18. Suspension traction device; 19. Single crossbeam support. 20. Frame; 21. Imitation four-bar linkage mechanism; 22. Radar speed measuring device; 23. Seed box; 24. Encoder unit; 25. DC drive motor; 26. Single fixed bracket; 27. Lifting movable bracket; 28. Lifting hydraulic cylinder; 29. ​​Hinge mechanism; 30. Base frame; 31. Grass discharge port; 32. Seed metering device rear housing; 33. Seed chamber wheel chamber; 34. Annular seed partition plate; 35. Seed metering disc; 36. Bolt; 37. Seed metering device front housing; 38. Seed unloading mechanism; 39. Seed cleaning brush. Detailed Implementation

[0025] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0026] The purpose of this invention is to provide an integrated machine for simultaneous wheat harvesting and cotton sowing. It utilizes a harvesting platform to harvest the grains of the previous crop in the field and pulverizes and spreads the straw onto the ground after sowing, achieving post-sowing straw removal. The harvesting system provides traction power to the sowing system, and the hydraulic system of the harvesting system provides hydraulic power to the steering axle. The connecting device has a steering axle structure, enabling synchronous steering of the harvesting and sowing systems. This effectively solves the problem of the impact of moisture-saving operations on cotton sowing efficiency and quality in wheat rotation areas.

[0027] To make the above-mentioned objects, features and advantages of the present invention more apparent and understandable, the present invention will be further described in detail below with reference to the accompanying drawings and specific embodiments.

[0028] like Figures 1-6As shown, this invention provides an integrated machine for simultaneous wheat harvesting and cotton sowing, including a harvesting system, a sowing system 5, and a connecting device for connecting the harvesting system and the sowing system 5. The harvesting system includes a harvesting platform 1, a harvester body 2, a straw discharge port 30, and a harvesting transmission system. After the previous crop in the field is picked up and cut by the harvesting platform 1, the harvester completes cleaning and detachment operations, and the crop straw is discharged through the straw discharge port 30 to the rear of the sowing system 5 via the conveying system, forming a covering for the sowing work area and achieving straw mulching after sowing. The combine harvester is a mature technology in the prior art and will not be described in detail here.

[0029] The main frame of the rear wheel 3 of the combine harvester is equipped with a traction interface, which is connected to the central tie rod in the middle of the frame of the seeding system 5 through a pin, and provides traction power to the rear seeding system 5 through the harvesting system; the hydraulic cylinder of the rear wheel 3 of the combine harvester is connected to the hydraulic cylinder of the steering axle 4 through a hydraulic pipe, which can realize the synchronous turning and steering of the combine harvester.

[0030] like Figure 2 As shown, the lifting device includes a lifting movable support 26, a lifting hydraulic cylinder 27, a hinge mechanism 28, and a base frame 29. The base frame 29 is fixed to the single crossbeam support 19 of the sowing system 5 by U-bolts. The two ends of the lifting hydraulic cylinder 27 are fixed to the base frame 29 and the lifting movable support 26 by pins, respectively. Its hydraulic power comes from the lifting hydraulic system of the harvesting system chassis. The steering axle fixing seat 10 is connected to the lifting device by pins. The lifting hydraulic cylinder 27 can realize the lifting and lowering of the sowing system 5.

[0031] The steering axle 4 includes a steering bridge frame and steering wheels 6; the steering cylinder 9 is mounted on the steering bridge frame and is used to drive the steering wheel 6 on one side to rotate and to drive the steering wheel 6 on the other side to rotate synchronously; the two steering wheels 6 are mounted on wheel frames, which are rotatably mounted at both ends of the steering bridge frame through slewing bearings, and the wheel frames are provided with a rotating main shaft that passes through the slewing bearings and the steering bridge frame.

[0032] like Figure 3 As shown, a hub 11 is fixedly connected to one side of the steering wheel 6, and a hub connecting rod 8 is provided on one side of the hub 11. The hub connecting rod 8 is connected to the hub through the rotating main shaft 7. The hub connecting rod 8 is hinged to the steering cylinder 9 through the pin end. The steering cylinder 9 is installed on the axle body and is connected to the hydraulic cylinder of the rear axle of the harvesting system through a hydraulic oil pipe, so that the steering axle 4 and the harvester can turn synchronously. At the same time, a hydraulic solenoid valve is arranged at the rear of the harvesting system to provide a hydraulic interface for the rear-mounted supporting implements, and connect to a hydraulic cylinder or hydraulic motor to provide power for the lifting of the supporting seeding system 5 and the steering axle 4.

[0033] In this embodiment, the steering axle 4 and the sowing system 5 are connected by a pair of support arms (lifting devices). The support arms are pin-connected to the wheel frame of the steering axle 4 and are distributed in a support configuration. Each support arm is equipped with a hydraulic cylinder. When the machine is harvesting and sowing, the steering axle 4 is in a lowered state and the sowing system 5 is operating normally. When the machine is turning around or not in operation, the lifting hydraulic cylinder 27 of the lifting device retracts, the steering axle 4 is raised, and the sowing system 5 is in a raised state. The sowing system is not in operation. The lifting hydraulic cylinder 27 drives the suspension frame to move vertically, thereby achieving the lifting requirements of the sowing system.

[0034] The seeding system 5 is located behind the wheat combine harvester. The seeding system 5 includes a seed box 22, a cotton precision seed metering device 13, a seed metering motor, a radar speed measuring device 21, a heavy-duty no-till seeding unit, and a unit crossbeam support 19. The heavy-duty no-till seeding unit is fixed on the unit crossbeam support 19. The unit crossbeam support 19 is connected to the lifting device through U-bolts to realize the lifting and lowering of the seeding system 5. The fixed truss of the heavy-duty no-till seeder unit is connected to the frame of the wheat combine harvester, providing traction power for the seeding system 5. The speed-following seeding system includes a main controller, a radar speed measurement unit, an encoder unit 23, a DC drive motor execution unit, and a communication unit. The radar speed measurement unit is used to measure the forward speed of the implement during operation and transmit the signal to the main controller. The encoder unit 23 is connected to the main controller and is used to measure the speed of the DC drive motor of the cotton precision seed metering device and transmit the signal to the main controller. The main controller receives signals from the radar speed measurement unit, the encoder unit 23, and the preset operating parameters, processes the signals, and transmits them to the DC drive motor execution units to control the speed of the DC drive motors, thereby realizing speed-following seeding operation.

[0035] like Figure 4 As shown, the seeding system 5 includes a contour-following heavy-duty no-till seeding unit, a speed-following seeding system, and a cotton precision seed metering device. The contour-following heavy-duty no-till seeding unit uses a stubble-clearing mechanism 17 to sweep straw to both sides of the seed furrow. The stubble-breaking disc 16 cuts the remaining straw in the seed furrow after sweeping and cuts the soil in the seed furrow. Then, the double disc furrow opener 15 further widens the seed furrow to a width of 2 to 3 cm. The depth of the double disc furrow opener 15 is limited by the depth-limiting wheel 14 contacting the ground surface. When the cotton precision seed metering device 13 speed-discharges cotton seeds into the seed furrow, the soil covering and compacting device 12 compacts the soil, thereby realizing the precision direct seeding of cotton.

[0036] like Figure 5As shown, to achieve post-sowing straw removal, the harvesting system uses a rear-throwing method. The harvesting platform 1 of the harvesting system collects and transports wheat to the straw discharge port 30, where it is then thrown backwards under centrifugal force and wind power. A perforated mounting plate is installed at the inlet of the straw discharge port 30, which is then mounted at the tail of the harvester's threshing and cleaning device. A triangular pyramidal guide strip is installed at the outlet of the internal channel of the straw discharge port 30, with the apex of the pyramidal guide pointing towards the inlet to guide and divert the flow, ensuring it is scattered as evenly as possible onto the post-sowing surface. The straw flow transported by the harvesting system's threshing and cleaning device enters the straw guiding channel through port A and is discharged through port B under the action of wind power from the fan and gravity, reaching the seedbed surface after sowing. This achieves post-sowing straw removal and covers the seedbed surface with straw, thus maintaining moisture retention after cotton sowing.

[0037] like Figure 6 As shown, the cotton seed feeding box 22 falls into the seed chamber of the front shell. The seed metering device is powered by the DC drive motor 24 to rotate at a suitable speed. The seed scoop of the seed metering disc 34 carries the cotton seeds. The seed metering disc 34 and the annular seed separator 33 hold the cotton seeds. When the seed scoop carries more than one seed, the excess seeds are removed by the seed cleaning brush 38. As the seed metering disc 34 rotates to the gap at the upper end of the annular seed separator 33, the seeds fall into the seed chamber wheel 32. The seed chamber wheel 32 and the seed metering disc 34 are connected by bolts 35 to achieve synchronous rotation. When the seed chamber carrying the seeds moves to the seed inlet, the cotton seed metering operation is completed.

[0038] This invention discloses an integrated machine for simultaneous wheat harvesting and cotton sowing. After the wheat crop is harvested, cotton is sown on the ground. The harvesting platform collects and cuts the previous crop, and the main harvesting unit completes the grain harvesting. During harvesting, the sowing system 5 is lowered via a vertical lifting device to complete the cotton sowing. The cotton sowing is completed simultaneously with the combined harvester's movement. The entire machine can complete both harvesting and sowing in a single operation. In this design, the components are compactly arranged, and the adaptive steering device effectively shortens the overall longitudinal dimension of the machine, resulting in better synchronous steering.

[0039] This invention, without altering the original structure and function of the combine harvester, achieves connection and synchronous steering between the combine harvester and the sowing system 5 through a designed follow-up steering device. A lifting device enables the sowing system 5 to be raised and lowered. When the machine is in operation, the lifting device lowers the sowing system 5 to a suitable position for sowing. When the machine is not harvesting or sowing, the lifting device lifts the sowing system off the ground, enabling the machine to turn and operate in and out of storage. The hydraulic circuit of the combine harvester chassis provides power to the suspension lifting device and the follow-up steering hydraulic device. The lifting hydraulic cylinder 27 drives the suspension frame to move vertically, thereby fulfilling the raising and lowering requirements of the tillage and sowing system. The hydraulic circuit of the harvester's rear wheels provides power to the speed-following steering axle device, thereby enabling the sowing system 5 and the harvesting system to turn synchronously and change direction.

[0040] This follow-up steering device solves the problems of connecting the combine harvester and the sowing system, as well as the inability to synchronize their turning and turning in the field. At the same time, without changing the original transmission ratio of the combine harvester, the hydraulic circuit of the combine harvester is used to realize the lifting and lowering of the sowing system 5, realizing the simultaneous sowing of cotton while harvesting wheat, and realizing the function of post-sowing weed removal.

[0041] It should be noted that, for those skilled in the art, it is obvious that the present invention is not limited to the details of the above exemplary embodiments, and that the present invention can be implemented in other specific forms without departing from the spirit or essential characteristics of the invention. Therefore, the embodiments should be considered exemplary and non-limiting in all respects, and the scope of the invention is defined by the appended claims rather than the foregoing description. Thus, all variations falling within the meaning and scope of equivalents of the claims are intended to be included within the present invention, and no reference numerals in the claims should be construed as limiting the scope of the claims.

[0042] Specific examples have been used to illustrate the principles and implementation methods of this invention. The descriptions of the above embodiments are only for the purpose of helping to understand the method and core ideas of this invention. Furthermore, those skilled in the art will recognize that, based on the ideas of this invention, there will be changes in the specific implementation methods and application scope. Therefore, the content of this specification should not be construed as a limitation of this invention.

Claims

1. A machine for simultaneous wheat harvesting and cotton sowing, characterized in that: include The harvesting system includes a harvesting platform, a combine harvester, and a straw discharge outlet. The previous crop in the field is picked up and cut by the harvesting platform and then cleaned and threshed by the combine harvester. The crop straw discharged by the combine harvester is transported to the straw discharge outlet by a conveying system. The crop straw is discharged through the straw discharge outlet to the rear of the sowing system and covered with straw after sowing. The linking device includes a steering axle. A traction interface is provided on the rear wheel main frame of the combine harvester. The traction interface is connected to the central tie rod in the middle of the frame of the seeding system via a pin. The front part of the central tie rod is connected to the steering axle via a lifting device. The steering cylinder of the steering axle and the lifting hydraulic cylinder of the lifting device are both connected to the hydraulic cylinder of the rear axle of the combine harvester via hydraulic oil pipes. The lifting device is used to control the lifting of the seeding system. The seeding system includes a seed box, a seed metering device, and a heavy-duty no-till seeding unit. The heavy-duty no-till seeding unit is fixed on a single-unit crossbeam support of a central tie rod. The single-unit crossbeam support is connected to a lifting device via U-bolts. The fixed truss of the heavy-duty no-till seeding unit is connected to the frame of the combine harvester. The seed box is set on the heavy-duty no-till seeding unit, and the seed metering device is connected to the bottom of the seed box. The lifting device includes a lifting movable support, a lifting hydraulic cylinder, a hinge mechanism, and a base frame. The base frame is fixed to the single crossbeam support of the central tie rod of the seeding system by U-bolts. The two ends of the lifting hydraulic cylinder are respectively connected to the base frame and the lifting movable support by pins. The steering axle fixing seat of the steering axle is connected to the lifting device by pins. The steering axle includes a steering bridge frame, wheel frames, and steering wheels. The wheel frames are rotatably mounted at both ends of the steering bridge frame via a slewing bearing. The steering wheels are mounted on the wheel frames. A rotating main shaft is provided between the wheel frames on both sides, passing through the slewing bearing and the steering bridge frame. A steering cylinder is mounted on the steering bridge frame and is used to drive the steering wheel on one side to rotate.

2. The integrated machine for simultaneous wheat harvesting and cotton sowing according to claim 1, characterized in that: A perforated mounting plate is provided at the inlet of the discharge port, which is used to install the discharge port at the tail of the threshing and cleaning device of the combine harvester; a triangular pyramid-shaped guide strip is provided at the outlet of the internal channel of the discharge port, and the cone apex of the triangular pyramid-shaped guide strip points towards the inlet of the discharge port.

3. The integrated machine for simultaneous wheat harvesting and cotton sowing according to claim 1, characterized in that: The rear axle hydraulic cylinder of the combine harvester is equipped with a hydraulic interface. The steering cylinder of the steering axle and the lifting hydraulic cylinder of the lifting device are respectively connected to the hydraulic interface through hydraulic oil pipes. A hydraulic solenoid valve is installed at each hydraulic interface.

4. The integrated machine for simultaneous wheat harvesting and cotton sowing according to claim 1, characterized in that: A hub is fixedly connected to one side of the steering wheel, and a hub connecting rod is provided on one side of the hub. The hub connecting rod is connected to the hub through a rotating main shaft, and the hub connecting rod is hinged to the steering cylinder through a pin end.

5. The integrated machine for simultaneous wheat harvesting and cotton sowing according to claim 1, characterized in that: It also includes a speed-following seeding system, which comprises a main controller, a radar speed measurement unit, an encoder unit, and a DC drive motor execution unit. The radar speed measurement unit measures the forward speed of the implement during operation and transmits the signal to the main controller. The encoder unit is connected to the main controller and measures the rotational speed of the DC drive motor of the seed metering device and transmits the signal to the main controller. The main controller receives signals from the radar speed measurement unit, the encoder unit, and pre-set operating parameters, processes the signals, and transmits them to the DC drive motor execution units to control the rotational speed of the DC drive motors, thereby realizing speed-following seeding operations.

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