A type of intercropping seeder with rotary tillage

Abstract

This invention relates to the field of seeder technology and discloses a rotary tiller-equipped intercropping seeder, comprising a main frame, a seeding drive assembly, and seeding unit modules. Two ground wheels are mounted at both ends of the main beam of the main frame and output power to the seeding drive assembly. Multiple seeding unit modules are arranged at equal intervals along the main beam of the main frame. Each seeding unit module includes a four-bar linkage, a seeding unit, and a drip irrigation tape laying assembly. It also includes a rotary tiller drive assembly and a rotary tiller weeding assembly. The rotary tiller weeding assembly is located in front of the seeding unit and can perform rotary tillage and weeding on a single intercropping area. The rotary tiller drive assembly is mounted on the main frame and can transmit power from the traction device to each rotary tiller weeding assembly. This invention can rotary tillage and weed to prepare the land in narrow intercropping areas, which is beneficial for subsequent smooth compaction, seeding, soil mixing, and drip irrigation laying operations.

Description

Technical Field

[0001] This invention relates to the field of seeders, and more particularly to a seeder with rotary tillage for intercropping. Background Technology

[0002] Patent CN120113429A discloses a method and seeder for dense intercropping of wheat and corn using a triangular seedling spacing system. The method includes a traction frame, a ground wheel, and individual seeding units. During sowing, the seeding units employ a small double-row triangular seedling spacing pattern. At least two seeding units are arranged side-by-side on the traction frame via a four-bar linkage. The ground wheel is connected to the traction frame via a connecting frame, and the ground wheel is linked to a transmission mechanism. The transmission mechanism drives the seeding units to rotate synchronously, achieving the seeding operation. The distance between the seeding units matches the reserved corn intercropping area during wheat planting. This patented technology improves upon existing wheat-corn intercropping methods by using a small double-row triangular seedling spacing pattern for corn planting within the reserved corn intercropping area. This optimizes the wheat-corn intercropping pattern, increases corn planting density, improves land utilization, and increases yield.

[0003] However, in this patented technology, a weeder is positioned in front of the seeding unit, on the same axis as the seeding unit. The weeder includes a weeding plate and a connecting plate. The bottom of the weeding plate has horizontally positioned, backward-sloping wings, giving it an L-shape. Two weeding plates are mounted side-by-side on a traction frame via the connecting plate, with their wings facing each other. The weeder is positioned in front of the seeding unit and on the same axis. During sowing, the weeding plate drives the wings to extend into the soil. The horizontally positioned wings can shovel weeds from the soil in front of the seeding unit, facilitating sowing. While this shoveling method can remove weeds in the corn intercropping area, it cannot loosen or prepare the land. If the soil is compacted or has stubble, the weeder is easily damaged, hindering sowing. Furthermore, the weeds shoveled are relatively long and easily become entangled in the furrow opener or the weeding plate, reducing weeding efficiency, causing furrowing failure, and disrupting sowing.

[0004] Therefore, it is necessary to develop a new type of intercropping and seeding machine with rotary tillage to address the above-mentioned shortcomings, which has become an urgent problem for those skilled in the art to solve. Summary of the Invention

[0005] The purpose of this invention is to provide a rotary tiller for intercropping, which can rotary till and weed the land in a narrow intercropping area, thus facilitating smooth sowing operations.

[0006] To solve the above-mentioned technical problems, the present invention adopts the following technical solution: This invention discloses a rotary tillage intercropping seeder, comprising a main frame, a seeding drive assembly, and seeding assembly units. Two ground wheels are mounted at both ends of the main beam of the main frame and output power to the seeding drive assembly. Multiple seeding assembly units are arranged at equal intervals along the main beam of the main frame. Each seeding assembly unit includes a four-bar linkage, a seeding unit, and a drip irrigation tape laying assembly. The seeding unit is connected to the rear of the main beam of the main frame via the four-bar linkage. The seeding drive assembly outputs power to each seeding unit to sow seeds in the intercropping area. The drip irrigation tape laying assembly is located behind the seeding unit. The machine also includes a rotary tillage drive assembly. Each seeding assembly unit further includes a rotary tillage and weeding assembly. The rotary tillage and weeding assembly is located in front of the seeding unit and can perform rotary tillage and weeding on a single intercropping area. The rotary tillage drive assembly is mounted on the main frame and can transmit power from the traction device to each rotary tillage and weeding assembly.

[0007] The applicant has solved a key technical problem for the first time in this field: how to achieve rotary tillage, weeding, and land preparation on an intercropping seeder. The difficulty lies in achieving discontinuous rotary tillage, arranging the rotary tillage and weeding components, and ensuring reliable power transmission. This application integrates the rotary tillage and weeding components into the seeding assembly unit, utilizing a centralized and decentralized power transmission system through the rotary tillage drive components. This stable and reliable structure enables simultaneous deep tillage within a relatively narrow intercropping area.

[0008] Furthermore, the rotary tillage drive assembly includes a gearbox and a drive shaft. The gearbox is located near the middle of the bottom surface of the main beam of the main frame. The input shaft end of the gearbox is connected to the power output shaft head of the traction device via a telescopic shaft. The drive shaft passes through the output sleeve of the gearbox. The drive shaft is arranged along the length direction of the main beam of the main frame and is power-connected to each of the rotary tillage and weeding assemblies.

[0009] Furthermore, the rotary tillage drive assembly also includes a front cover, the drive shaft is specifically a regular hexagonal prism shaft, and the front cover is an arc-shaped shell structure that protects the side of the drive shaft facing the traction device.

[0010] Furthermore, the rotary tillage and weeding assembly includes a rotary tillage frame, a rotary tillage blade shaft, and a transmission chain assembly. The top of the rotary tillage frame is fixedly connected to the lower part of the main beam of the main frame, and the front pin of the four-bar linkage is connected to the upper rear of the rotary tillage frame. The rotary tillage blade shaft is rotatably connected to the bottom of the rotary tillage frame and its width is adapted to the intercropping area of ​​a single strip. The transmission chain assembly is drivingly connected between the rotary tillage drive assembly and the rotary tillage blade shaft.

[0011] Furthermore, the rotary tiller frame includes a fixed part, a lower swing arm, a sleeve swing seat, and a telescopic rod assembly. The top of the fixed part is welded to the lower part of the main beam of the main frame, and the bottom end of the fixed part is rotatably connected to the top end of the lower swing arm via a pin. The rotary tiller shaft is rotatably connected to the bottom end of the lower swing arm. The telescopic rod assembly is elastically spread between the fixed part and the free end of the lower swing arm. The top end of the telescopic rod assembly is connected between the two side plates of the fixed part via the sleeve swing seat, and the bottom end of the telescopic rod assembly is connected to the top end of the lower swing arm via a pin.

[0012] How to achieve rotary tillage by adjusting the height of the rotary tiller shaft is another challenge of this application, because the terrain in each narrow intercropping area may be different or even have opposite elevations. Therefore, a flexible and reliable swing positioning structure can effectively cooperate with the rotary tiller shaft to achieve rotary tillage at a consistent depth.

[0013] Furthermore, the telescopic rod assembly includes a main rod body, a compression spring, and an adjusting nut. The bottom of the main rod body is configured as a threaded rod, the adjusting nut is threaded onto the threaded rod, and the compression spring is sleeved on the main rod body with its two ends respectively abutting against the adjusting nut and the bottom surface of the sleeve swing seat.

[0014] Furthermore, the transmission chain assembly includes sprockets and chains. There are three sprockets, with the middle sprocket being a tower sprocket rotatably connected to a pin between the fixed part and the lower swing arm. The top sprocket is sleeved on the transmission shaft of the rotary tillage drive assembly, and the bottom sprocket is keyed to the middle of the rotary tillage blade shaft. There are two chains, with one chain drivingly connected between the top and middle sprockets, and the other chain drivingly connected between the bottom and middle sprockets.

[0015] Furthermore, the rotary tillage and weeding assembly also includes a tensioning wheel assembly, which is disposed within the lower swing arm. The tensioning wheel assembly includes a swing wheel and a pressing assembly, which pushes the swing wheel so that the swing wheel is pressed against the outside of the chain below.

[0016] Furthermore, the rotary tillage and weeding assembly also includes a soil-crushing roller, which rolls and crushes and levels the land after being tilled by the rotary tillage blade shaft; the upper part of the lower swing arm is also fixedly connected to a vertically arranged rear extension plate, and the top of the support of the soil-crushing roller is detachably installed at the rear of the rear extension plate.

[0017] Furthermore, it also includes a baffle plate, which is a U-shaped plate with the pointed end facing forward, and the baffle plate is arranged around the outside of the entire seeding assembly unit; at both ends of the main frame, the baffle plate is also arranged around the front of the ground wheel.

[0018] Compared with the prior art, the beneficial technical effects of the present invention are as follows: This invention discloses a rotary tillage intercropping seeder. By adding a rotary tillage and weeding component to each of the seeding assembly units, the soil within a single intercropping area can be rotary tilled before sowing. In the narrow intercropping area, rotary tillage and weeding prepare the land, pulverizing weeds and preventing them from tangling, thus facilitating smooth subsequent sowing operations. By setting a rotary tillage drive component, all rotary tillage and weeding components can be driven synchronously, allowing for simultaneous rotary tillage of multiple intercropping areas.

[0019] Furthermore, the gearbox and drive shaft design allows for the power output of the traction equipment to each rotary tillage and weeding component, ensuring synchronized operation and preventing individual components from slipping out of control. A rotary tillage frame supports the rotary tiller shaft and drive chain assembly, allowing the shaft to rotate at the bottom, driving the rotary tillers and completing the rotary tillage operation. A pin-connected fixing part and lower swing arm allow the rotary tiller shaft to rotatably connect to the bottom of the lower swing arm, enabling it to adjust its height according to the terrain, ensuring sufficient tillage depth and perfectly matching the height-adjusting sowing unit, significantly improving sowing quality. A telescopic rod assembly flexibly pushes the lower swing arm downwards, ensuring sufficient soil intake for the rotary tiller shaft. By strategically placing the adjusting nut threaded onto the threaded rod, the force of the spring pushing the lower swing arm can be adjusted, allowing for flexible adaptation to different plot conditions. The transmission chain assembly, consisting of sprockets and chains, transmits power while effectively driving the suspended, oscillating rotary tiller shaft. The addition of a tensioning wheel assembly effectively tensions the chain, preventing it from slipping off. The chain is tensioned using the oscillating wheel and tensioning assembly, allowing for easy adjustment of tension by rotating the set screw on the outside without disassembling the lower swing arm. The addition of a soil-crushing roller crushes and rolls harder, larger clods of soil produced by rotary tillage, while also leveling the land, facilitating the opening of seed furrows by the disc furrow opener. Multiple sets of mounting holes at different heights on the rear extension plate allow for the installation of soil-crushing rollers at various heights. The addition of a rotary tiller guard prevents soil kicked up by the rotary tiller blades from scattering, preventing dust and concentrating loose soil for easier sowing. The fully enclosed baffle plate effectively isolates wheat from the front to the rear, directing it to both sides and preventing crop losses caused by the seeder components becoming entangled with wheat straw during sowing. Attached Figure Description

[0020] The present invention will be further described below with reference to the accompanying drawings.

[0021] Figure 1 This is a three-dimensional structural diagram of the intercropping seeder with rotary tillage of the present invention; Figure 2 This is a three-dimensional structural diagram of the intercropping seeder with rotary tillage of the present invention from another angle. Figure 3 This is a three-dimensional structural diagram of the intercropping seeder with rotary tillage of the present invention from another angle. Figure 4 This is a top view schematic diagram of the intercropping seeder with rotary tillage of the present invention; Figure 5 This is a three-dimensional structural diagram of the seeding unit and rotary tillage weeding component at the ground wheel position in this invention; Figure 6 for Figure 5 Corresponding front view structure diagram; Figure 7 This is a schematic diagram of the main cross-sectional structure of the rotary tillage and weeding component in this invention.

[0022] Explanation of reference numerals in the attached drawings: 1. Main frame; 2. Seeding drive assembly; 3. Four-bar linkage; 4. Seeding unit; 401. Disc furrow opener; 402. Soil coverer; 403. Pressing wheel; 5. Drip irrigation tape laying assembly; 501. Drip irrigation tape guide wheel; 6. Ground wheel; 7. Strand; 8. Rotary tillage drive assembly; 801. Drive shaft; 802. Front cover; 9. Rotary tillage weeding assembly; 901. Rotary tillage plate frame; 9011. Fixing part; 9012. Lower swing arm; 9013. Sleeve swing seat; 9014. Telescopic rod assembly; 9015. Rear extension plate; 902. Rotary tillage blade shaft; 903. Drive chain assembly; 904. Tensioner wheel assembly; 905. Soil-crushing roller; 906. Rotary tillage cover. Detailed Implementation

[0023] The core of this invention is to provide a rotary tiller for intercropping, which can rotary till and weed the land in a narrow intercropping area, thus facilitating smooth sowing operations.

[0024] 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 a part of the embodiments of the present invention, and not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of the present invention. In the following detailed description of the accompanying drawings, the descriptions of top, bottom, left, and right are all relative to the accompanying drawings and should not be construed as limiting the present invention.

[0025] Refer to the attached diagram. Figure 1 This is a three-dimensional structural diagram of the intercropping seeder with rotary tillage of the present invention; Figure 2 This is a three-dimensional structural diagram of the intercropping seeder with rotary tillage of the present invention from another angle. Figure 3 This is a three-dimensional structural diagram of the intercropping seeder with rotary tillage of the present invention from another angle. Figure 4 This is a top view schematic diagram of the intercropping seeder with rotary tillage of the present invention; Figure 5This is a three-dimensional structural diagram of the seeding unit and rotary tillage weeding component at the ground wheel position in this invention; Figure 6 for Figure 5 Corresponding front view structure diagram; Figure 7 This is a schematic diagram of the main cross-sectional structure of the rotary tillage and weeding component in this invention.

[0026] In one specific implementation, such as Figures 1-7 As shown, a rotary tiller-equipped intercropping seeder includes a main frame 1, a seeding drive assembly 2, and individual seeding units. The main frame 1 is mounted to a traction device via suspension rods, typically a tractor. Two ground wheels 6 are mounted at both ends of the main beam of the main frame 1 and output power to the seeding drive assembly 2. Multiple seeding units are equidistantly spaced along the length of the main beam of the main frame 1. Each seeding unit includes a four-bar linkage 3, a seeding unit 4, and a drip irrigation tape laying assembly 5. The seeding unit 4 is connected to the rear of the main beam of the main frame 1 via the four-bar linkage 3, which ensures that the seeding unit 4 can sow according to the terrain. The seeding drive assembly 2 outputs power to each seeding unit 4 to sow within the intercropping area; that is, one seeding unit 4 sows for one intercropping area. The drip irrigation tape laying assembly 5 is located behind the sowing unit 4. The drip irrigation tape laying assembly 5 includes a drip irrigation bracket, a drip irrigation tape reel, and a drip irrigation tape guide wheel 501. The drip irrigation bracket is installed behind the bracket of the sowing unit 4. The drip irrigation tape reel, which is used to release the entire roll of drip irrigation tape, is rotatably mounted on the top of the drip irrigation bracket. The drip irrigation tape guide wheel 501 is rotatably connected to the bottom end of the drip irrigation bracket and rolls and guides the drip irrigation tape that is being delivered.

[0027] Specifically, such as Figures 1-6 As shown, the sowing unit 4 includes a sowing support and a seed box, a seed metering device, a disc furrow opener 401, a soil covering device 402, and a press wheel 403 mounted on the sowing support. The output shaft of the sowing drive assembly 2 drives the seed metering device to sow seeds. The seed metering tube is located between the two disc furrow openers 401, and the soil covering device 402 and the press wheel 403 are located at the rear.

[0028] The above-described parts of the present invention are generally consistent with the prior art seeders described in the background section, and will not be elaborated further here. Any omissions should not be regarded as limitations on this application.

[0029] Intercropping pattern: Wheat is planted in 60cm wide rows, with 7 rows. A 52cm gap is left between adjacent wheat planting areas for planting corn, with two rows of corn planted, spaced 20cm apart and 16cm from the wheat area. The intercropping seeder with rotary tillage of this invention is used to plant corn before wheat harvest. Obviously, specific parameters of the intercropping pattern can be adjusted, requiring corresponding adjustments to the number and spacing of the individual planting units.

[0030] The key innovation of this embodiment compared to existing intercropping seeders is that the intercropping seeder with rotary tillage of this invention also includes a rotary tillage drive assembly 8, and each seeding unit also includes a rotary tillage and weeding assembly 9. That is, each seeding unit includes a set of rotary tillage and weeding assemblies 9. The rotary tillage and weeding assemblies 9 are located in front of the seeding unit 4 and can perform rotary tillage and weeding on individual intercropping areas, i.e., the plot is rotary tilled before sowing. The rotary tillage drive assembly 8 is mounted on the main frame 1 and can transmit power from the traction equipment to each rotary tillage and weeding assembly 9.

[0031] By adding a rotary tillage and weeding component 9 to each of the aforementioned seeding units, the land within a single intercropping area can be rotary tilled before sowing. Rotary tillage and weeding in narrow intercropping areas pulverize the land, preventing weeds from tangling and facilitating subsequent sowing operations. The seeding unit is highly functional, capable of completing weeding, soil compaction, sowing, soil mixing, and drip irrigation tape installation in a single operation within a narrow intercropping area. The rotary tillage drive component 8 enables synchronized driving of all rotary tillage and weeding components 9, allowing for simultaneous rotary tillage across multiple intercropping areas.

[0032] In one specific embodiment of the present invention, such as Figure 1 , Figure 2 and Figures 4-7 As shown, the rotary tillage drive assembly 8 includes a gearbox and a drive shaft 801. The gearbox is located near the center of the bottom surface of the main beam of the main frame 1. The input shaft of the gearbox is connected to the power output shaft of the traction device via a telescopic shaft, which is a drive shaft with universal joints at both ends. The drive shaft 801 passes through the output sleeve of the gearbox and is rotated by it. The drive shaft 801 is arranged along the length of the main beam of the main frame 1 and provides power connection to each rotary tillage and weeding assembly 9.

[0033] Specifically, such as Figure 4 and Figure 5 As shown, the rotary tillage drive assembly 8 also includes a front cover 802. The drive shaft 801 is specifically a regular hexagonal prism shaft, and the front cover 802 is an arc-shaped shell structure that protects the side of the drive shaft 801 facing the traction device. The front cover 802 can be divided into multiple sections according to actual conditions, arranged along the length of the drive shaft 801.

[0034] By setting up the gearbox and drive shaft 801, the power output of the traction equipment can be distributed to each rotary tillage and weeding component 9, driving each rotary tillage and weeding component 9 to work synchronously, thus avoiding the situation where a single rotary tillage and weeding component 9 loses rotation.

[0035] In one specific embodiment of the present invention, such as Figures 1-7As shown, the rotary tillage and weeding assembly 9 includes a rotary tillage frame 901, a rotary tillage blade shaft 902, and a transmission chain assembly 903. The top of the rotary tillage frame 901 is fixedly connected to the lower part of the main beam of the main frame 1, and the front pin of the four-bar linkage 3 is connected to the upper rear of the rotary tillage frame 901. The rotary tillage blade shaft 902 is rotatably connected to the bottom of the rotary tillage frame 901, and its width is adapted to a single intercropping area. The main shaft of the rotary tillage blade shaft 902 is horizontally set, and multiple rotary tillage blades are installed on the main shaft of the rotary tillage blade shaft 902. The working range of the rotary tillage blades is adapted to the width of a single intercropping area. The transmission chain assembly 903 is drivingly connected between the rotary tillage drive assembly 8 and the rotary tillage blade shaft 902.

[0036] The rotary tillage plate frame 901 supports the rotary tillage blade shaft 902 and the transmission chain assembly 903, so that the rotary tillage blade shaft 902 rotates at the bottom, driving the rotary tillage blade to work, thereby completing the rotary tillage operation.

[0037] Specifically, such as Figure 7 As shown, the rotary tiller frame 901 includes a fixing part 9011, a lower swing arm 9012, a sleeve swing seat 9013, and a telescopic rod assembly 9014. The fixing part 9011 is a frame structure composed of two oppositely arranged side plates and multiple centrally spaced support columns. The top of the fixing part 9011 is welded to the lower part of the main beam of the main frame 1, and the bottom end of the fixing part 9011 is rotatably connected to the top end of the lower swing arm 9012 via a pin. The rotary tiller shaft 902 is rotatably connected to the bottom end of the lower swing arm 9012. The acute-angle opening between the fixing part 9011 and the lower swing arm 9012 faces rearward. The telescopic rod assembly 9014 is elastically extended at the free ends of the fixing part 9011 and the lower swing arm 9012, i.e., connected to the acute-angle opening. The top end of the telescopic rod assembly 9014 is connected between the two side plates of the fixed part 9011 via a sleeve swing seat 9013. The two ends of the sleeve swing seat 9013 are rotatably connected to the shaft holes in the side plates of the fixed part 9011. The bottom pin of the telescopic rod assembly 9014 is connected to the top of the lower swing arm 9012.

[0038] Specifically, such as Figure 7 As shown, the telescopic rod assembly 9014 includes a main rod body, a compression spring, and an adjusting nut. The bottom of the main rod body is configured as a threaded rod, and the adjusting nut is threaded onto the threaded rod. The compression spring sleeve is a cylindrical helical spring, which is sleeved on the main rod body and its two ends abut against the adjusting nut and the bottom surface of the sleeve swing seat 9013, respectively.

[0039] Specifically, such as Figure 7 As shown, there are two adjusting nuts. The lower adjusting nut is tightened onto the bottom surface of the upper adjusting nut after the spring pressure is adjusted by the upper adjusting nut.

[0040] The rotary tiller shaft 902 is rotatably connected to the bottom end of the lower swing arm 9012 via a pin-connected fixing part 9011 and a lower swing arm 9012. This allows the rotary tiller shaft 902 to rise and fall according to the terrain, ensuring its tillage depth and perfectly matching the seeding unit 4, which adjusts its height accordingly, thus significantly improving seeding quality. The telescopic rod assembly 9014 flexibly pushes the lower swing arm 9012 downwards, ensuring sufficient soil intake for the rotary tiller shaft 902. By properly setting the adjusting nut threaded onto the threaded rod, the installation position of the adjusting nut can be adjusted to change the force of the spring that pushes the lower swing arm 9012, thereby achieving flexible adaptation to different plot conditions.

[0041] In one specific embodiment of the present invention, such as Figure 7 As shown, the transmission chain assembly 903 includes sprockets and chains. There are three sprockets: the middle sprocket is a tower sprocket rotatably connected to a pin between the fixed part 9011 and the lower swing arm 9012; the top sprocket is sleeved on the transmission shaft 801 of the rotary tillage drive assembly 8 and rotates synchronously with the hexagonal prism shaft; and the bottom sprocket is keyed to the middle of the main shaft of the rotary tillage blade shaft 902. There are two chains, which are not shown in the attached drawing. One chain connects the top and middle sprockets, and the other chain connects the bottom and middle sprockets.

[0042] Specifically, such as Figure 7 As shown, the rotary tillage and weeding assembly 9 also includes a tensioning wheel assembly 904, which is disposed inside the lower swing arm 9012. The tensioning wheel assembly 904 includes a swing wheel and a pressing assembly. The pressing assembly pushes the swing wheel so that the swing wheel is pressed against the outside of the lower chain.

[0043] Specifically, such as Figure 7 As shown, the top pin of the swing arm of the swing wheel is connected to the inner wall of the lower swing arm 9012 housing. The tightening assembly includes a push-lock nut and a set screw. The push-lock nut is directly welded to the outside of the through hole on the bottom surface of the lower swing arm 9012 housing. The set screw is threaded to the push-lock nut, and the inner end of the set screw abuts against the lower side surface of the lower swing arm 9012, causing the swing wheel to swing upward and backward. A back-tightening lock nut to prevent loosening is required on the set screw.

[0044] Specifically, such as Figure 6 and Figure 7 As shown, the exposed parts of the sprocket and chain are all equipped with protective covers for sealing and protection.

[0045] The transmission chain assembly 903, consisting of a sprocket and a chain, can transmit power while fully driving and adapting the suspended, oscillating rotary tiller shaft 902. The addition of a tensioning wheel assembly 904 effectively tensions the chain, preventing it from slipping off. Using the aforementioned oscillating wheel and tensioning assembly to tension the chain allows for adjustment of the tension by rotating the set screw on the outside without disassembling the lower swing arm 9012.

[0046] In one specific embodiment of the present invention, such as Figures 1-7 As shown, the rotary tillage and weeding assembly 9 also includes a soil-crushing roller 905, which rolls and crushes larger soil clods and can level the plot after rotary tillage by the rotary tillage blade shaft 902. The upper part of the lower swing arm 9012 is also fixedly connected to a vertically arranged rear extension plate 9015, and the top of the support of the soil-crushing roller 905 is detachably installed at the rear of the rear extension plate 9015.

[0047] Specifically, such as Figure 6 As shown, the rear extension plate 9015 has multiple sets of mounting holes of different heights to match the mounting position of the soil crushing roller 905 bracket, which can realize the installation of soil crushing roller 905 at different heights.

[0048] By adding a soil-crushing roller 905, the harder and larger soil clods produced by rotary tillage can be rolled and crushed, and the land can also be leveled, which is beneficial for the disc furrow opener 401 to open planting furrows; by opening multiple sets of mounting holes of different heights at the rear of the extension plate 9015, soil-crushing rollers 905 of different heights can be installed.

[0049] Specifically, such as Figures 1-7 As shown, the rotary tillage and weeding assembly 9 also includes a rotary tillage cover 906, which is an arc-shaped thin plate cover. The rotary tillage cover 906 is located below the rear extension plate 9015 and on both sides of the lower swing arm 9012. The rotary tillage cover 906 has end plates for sealing the ports at both ends. The rotary tillage cover 906 provides upper and rear protection for the rotary tillage blade shaft 902.

[0050] Adding a rotary tillage cover 906 can prevent soil kicked up by the rotary tillage blades from scattering in all directions, prevent dust, and concentrate loose soil for easier sowing.

[0051] In one specific embodiment of the present invention, such as Figures 1-6 As shown, the rotary tiller intercropping seeder of the present invention also includes a baffle plate 7, which is a U-shaped plate with its pointed end facing forward. The baffle plate 7 surrounds the outside of the entire seeding assembly unit and is connected to the brackets of various parts at appropriate positions using screws. At both ends of the main frame 1, the baffle plates 7 are also arranged in front of the ground wheels 6.

[0052] The baffle plate 7, which is set in a fully enclosed manner, can effectively isolate wheat from the front end to the back end, and disperse it to both sides, thus avoiding crop losses caused by the entanglement of the seeder parts with wheat straw during the sowing process.

[0053] The working process of the rotary tiller intercropping seeder of this invention is as follows: The rotary tiller intercropping seeder of this invention uses a tractor as the traction device to sow seeds in the reserved corn planting area before wheat harvest. The sowing process is basically the same as that of existing intercropping seeders, so the focus is on the rotary tilling part: The power take-off shaft at the rear of the tractor transmits power to the gearbox of the rotary tilling drive assembly 8 through a drive shaft with a universal joint. The output sleeve of the gearbox rotates the drive shaft 801. The part where the drive shaft 801 intersects with each rotary tilling and weeding assembly 9 drives the sprocket at the top of the drive chain assembly 903 to rotate. Then, the two chains drive the sprocket at the bottom, thereby realizing the rotation of the main shaft of the rotary tiller shaft 902, driving the rotary tiller blades to work and perform rotary tilling and weeding operations within the width of a single intercropping area. When the terrain is undulating, in the case of a raised or protruding terrain, the lower swing arm 9012 will swing slightly upward relative to the fixed part 9011, and the compression spring of the telescopic rod assembly 9014 will be compressed to prevent the rotary tiller blades from being damaged by over-drilling. In the case of a concave terrain, under the restoring force of the compression spring of the telescopic rod assembly 9014, the lower swing arm 9012 will swing slightly downward relative to the fixed part 9011 to ensure that the rotary tillage shaft 902 has sufficient rotary tillage depth and ensure smooth subsequent furrowing and sowing.

[0054] It should be noted that rotary tillage can cause weed seeds to be dispersed to some extent. Therefore, after the intercropping operation is completed, a pre-emergent herbicide should be applied to form a film on the soil surface to kill the weed seeds that have just been awakened by rotary tillage and are about to germinate, thus providing auxiliary weed control.

[0055] In summary, the rotary tillage intercropping seeder described in this application, by adding a rotary tillage and weeding component 9 to each of the seeding assembly units, can perform rotary tillage treatment on the plot within a single intercropping area before sowing. In narrow intercropping areas, rotary tillage and weeding prepare the land, pulverizing weeds and preventing them from tangling, which facilitates smooth subsequent sowing operations. The rotary tillage drive component 8 enables synchronous driving of all rotary tillage and weeding components 9, allowing simultaneous rotary tillage of multiple intercropping areas. Furthermore, the gearbox and drive shaft 801 allow the power output of the traction device to each rotary tillage and weeding component 9, driving them to work synchronously and preventing individual rotary tillage and weeding components 9 from losing rotation. The rotary tillage plate frame 901 supports the rotary tillage blade shaft 902 and the drive chain assembly 903, allowing the rotary tillage blade shaft 902 to rotate at the bottom, driving the rotary tillage blades to work and thus completing the rotary tillage operation. The rotary tiller shaft 902 is rotatably connected to the bottom end of the lower swing arm 9012 via a pin-connected fixing part 9011 and a lower swing arm 9012. This allows the rotary tiller shaft 902 to rise and fall according to the terrain, ensuring its tillage depth and perfectly matching the seeding unit 4, which adjusts its position accordingly, thus significantly improving seeding quality. The telescopic rod assembly 9014 flexibly pushes the lower swing arm 9012 downwards, ensuring sufficient soil intake for the rotary tiller shaft 902. By properly setting the adjusting nut threaded onto the threaded rod, the installation position of the adjusting nut can be adjusted to change the force of the spring pressing the lower swing arm 9012, thereby achieving flexible adaptation to different plot conditions. The transmission chain assembly 903, composed of a sprocket and a chain, can transmit power while fully driving the suspended and swinging rotary tiller shaft 902. The addition of a tensioning wheel assembly 904 effectively tensions the chain, preventing chain slippage. The chain is tensioned using the swing wheel and tightening assembly, and the tension can be adjusted by rotating the top screw on the outside without disassembling the lower swing arm 9012. The addition of a soil-crushing roller 905 allows for the rolling and crushing of harder, larger clods of soil produced by rotary tillage, while also leveling the land, facilitating the opening of planting furrows by the disc furrow opener 401. Multiple sets of mounting holes at different heights are provided at the rear of the extension plate 9015, allowing for the installation of soil-crushing rollers 905 at various heights. The addition of a rotary tillage guard 906 prevents soil kicked up by the rotary tillage blades from scattering outwards, preventing dust and concentrating loose soil for easier sowing. The fully enclosed baffle 7 effectively isolates wheat from the front to the rear, distributing it to both sides and preventing crop losses caused by the seeder parts becoming entangled with wheat straw during sowing.

[0056] The embodiments described above are merely preferred embodiments of the present invention and are not intended to limit the scope of the present invention. Various modifications and improvements made by those skilled in the art to the technical solutions of the present invention without departing from the spirit of the present invention should fall within the protection scope defined by the claims of the present invention.

Claims

1. A rotary tillage intercropping seeder, comprising a main frame (1), a seeding drive assembly (2), and seeding assembly units, wherein two ground wheels (6) are installed at both ends of the main beam of the main frame (1) and output power to the seeding drive assembly (2), and multiple seeding assembly units are equidistantly arranged along the main beam of the main frame (1); each seeding assembly unit includes a four-bar linkage (3), a seeding unit (4), and a drip irrigation tape laying assembly (5) arranged in a set, wherein the seeding unit (4) is connected to the rear of the main beam of the main frame (1) through the four-bar linkage (3), the seeding drive assembly (2) is capable of outputting power to each of the seeding units (4) to sow seeds in the intercropping area, and the drip irrigation tape laying assembly (5) is arranged behind the seeding unit (4); characterized in that: It also includes a rotary tillage drive assembly (8), and the seeding assembly unit also includes a rotary tillage and weeding assembly (9). The rotary tillage and weeding assembly (9) is located in front of the seeding unit (4) and can perform rotary tillage and weeding on a single intercropping area. The rotary tillage drive assembly (8) is located on the main frame (1) and can transmit the power of the traction device to each of the rotary tillage and weeding assemblies (9).

2. The intercropping seeder with rotary tillage according to claim 1, characterized in that: The rotary tillage drive assembly (8) includes a gearbox and a drive shaft (801). The gearbox is located on the bottom surface of the main beam of the main frame (1) near the middle. The input shaft end of the gearbox is connected to the power output shaft head of the traction device through a telescopic shaft. The drive shaft (801) passes through the output sleeve of the gearbox. The drive shaft (801) is arranged along the length direction of the main beam of the main frame (1) and is powered to each of the rotary tillage weeding assemblies (9).

3. The intercropping seeder with rotary tillage according to claim 2, characterized in that: The rotary tillage drive assembly (8) also includes a front cover (802), the drive shaft (801) is specifically a regular hexagonal prism shaft, and the front cover (802) is an arc shell structure that protects the side of the drive shaft (801) facing the traction device.

4. The intercropping seeder with rotary tillage according to claim 1, characterized in that: The rotary tillage and weeding assembly (9) includes a rotary tillage frame (901), a rotary tillage blade shaft (902), and a transmission chain assembly (903). The top of the rotary tillage frame (901) is fixedly connected to the lower part of the main beam of the main frame (1), and the front pin of the four-bar linkage (3) is connected to the upper rear of the rotary tillage frame (901). The rotary tillage blade shaft (902) is rotatably connected to the bottom of the rotary tillage frame (901) and its width is adapted to the intercropping area of ​​a single strip. The transmission chain assembly (903) is driven between the rotary tillage drive assembly (8) and the rotary tillage blade shaft (902).

5. The intercropping seeder with rotary tillage according to claim 4, characterized in that: The rotary tillage frame (901) includes a fixed part (9011), a lower swing arm (9012), a sleeve swing seat (9013), and a telescopic rod assembly (9014). The top of the fixed part (9011) is welded to the lower part of the main beam of the main frame (1). The bottom end of the fixed part (9011) is rotatably connected to the top end of the lower swing arm (9012) through a pin. The rotary tillage blade shaft (902) is rotatably connected to the bottom end of the lower swing arm (9012). The telescopic rod assembly (9014) is elastically spread between the fixed part (9011) and the free end of the lower swing arm (9012). The top end of the telescopic rod assembly (9014) is connected between the two side plates of the fixed part (9011) through the sleeve swing seat (9013). The bottom end of the telescopic rod assembly (9014) is connected to the top of the lower swing arm (9012) through a pin.

6. The intercropping seeder with rotary tillage according to claim 5, characterized in that: The telescopic rod assembly (9014) includes a main rod body, a compression spring, and an adjusting nut. The bottom of the main rod body is configured as a threaded rod, and the adjusting nut is threaded onto the threaded rod. The compression spring is sleeved on the main rod body, and its two ends abut against the adjusting nut and the bottom surface of the sleeve swing seat (9013), respectively.

7. The intercropping seeder with rotary tillage according to claim 5, characterized in that: The transmission chain assembly (903) includes sprockets and chains. There are three sprockets. The middle sprocket is a tower sprocket and is rotatably connected to the pin between the fixed part (9011) and the lower swing arm (9012). The top sprocket is sleeved on the transmission shaft (801) of the rotary tillage drive assembly (8). The bottom sprocket is keyed to the middle of the main shaft of the rotary tillage blade shaft (902). There are two chains. One chain is connected between the top and middle sprockets, and the other chain is connected between the bottom and middle sprockets.

8. The intercropping seeder with rotary tillage according to claim 7, characterized in that: The rotary tillage and weeding assembly (9) also includes a tensioning wheel assembly (904), which is disposed inside the lower swing arm (9012). The tensioning wheel assembly (904) includes a swing wheel and a pressing assembly. The pressing assembly pushes the swing wheel so that the swing wheel presses against the outside of the chain below.

9. The intercropping seeder with rotary tillage according to claim 5, characterized in that: The rotary tillage and weeding assembly (9) also includes a soil-crushing roller (905), which rolls and crushes and flattens the plot of land after being tilled by the rotary tillage cutter shaft (902); the upper part of the lower swing arm (9012) is also fixedly connected to a vertically arranged rear extension plate (9015), and the top of the support of the soil-crushing roller (905) is detachably installed at the rear of the rear extension plate (9015).

10. The intercropping seeder with rotary tillage according to claim 1, characterized in that: It also includes a baffle plate (7), which is a U-shaped plate with the tip facing forward. The baffle plate (7) surrounds the outside of the entire sowing assembly unit. At both ends of the main frame (1), the baffle plate (7) also surrounds the front of the ground wheel (6).

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