Seed pre-cutting type double-seed-chamber single-section cassava seed stem seeder

Abstract

The invention relates to a seed pre-cutting type double-seed-chamber single-section cassava seed stem seeder which comprises a rack, a ditching mechanism, a double-filling mechanism, a soil covering mechanism and a transmission part, the ditching mechanism is used for loosening soil and then forming two rows of ridges, sowing ditches are formed in the ridges, and the upper part of the middle part of the ditching mechanism is connected with a tractor; the number of the double-filling mechanisms is two, the two double-filling mechanisms feed cassava seed stems into the two seeding furrows respectively, and each double-filling mechanism feeds the seed stems twice so as to avoid missing feeding of the cassava seed stems into the seeding furrows; the soil covering mechanism is located at the rear part of the rack and enables cassava seed stems in the seeding furrows to be fully buried by soil; and the transmission part is respectively connected with and drives the ditching mechanism and the double-charging mechanism to operate. According to the method, the miss-filling index of cassava seed stem sowing can be effectively reduced, the qualified index of cassava seed stem sowing can be improved, accurate planting of cassava seed stems can be achieved, and the method has practical and popularization value.

Description

Technical Field

[0001] This invention relates to the field of agricultural engineering, specifically to a pre-cut seed-type double-chamber single-segment cassava seed tuber planter. Background Technology

[0002] Cassava, as a globally important strategic economic crop, plays a crucial role in ensuring food security for 800 million people in tropical and subtropical regions. Its unique biomass characteristics make it a core raw material for the bio-based economy, irreplaceable in fields such as the food industry (starch processing), renewable energy (fuel ethanol), and green manufacturing (biodegradable materials). However, due to the special morphological characteristics of the cassava stems and the limitations of agronomical requirements, the current cassava planting process is still mainly based on traditional manual labor. The stems need to be manually cut into 10-15 cm segments, and then planted using methods such as horizontal, oblique, or vertical planting after trenching. This step accounts for more than 60% of the labor intensity of the entire production cycle, significantly restricting the large-scale development of the industry. Global research on precision cassava planting technology shows distinct regional characteristics. Major producing countries such as Brazil, Nigeria, and Thailand have made breakthroughs in the development of real-time cutting-type planting equipment. However, statistics from the end of 2024 show that my country's mechanization rate for precision cassava planting is only 2.94%, with labor costs 7-8 times higher than in mechanized producing countries. This poses a potential threat to my country's food security strategy. Therefore, developing a high-performance and reliable precision cassava planter that takes into account the physical characteristics of cassava seed tubers has become a key technological requirement for breaking through the bottleneck of industrial development and building a modern cassava production system.

[0003] Precision planters are one of the core components of cassava planters, mainly including real-time seed-cutting and pre-cutting types. Domestic and international research on cassava planters focuses on the overall design and optimization of real-time seed-cutting models, all employing manual assisted seed feeding and extensive seed metering methods. The long hours of repetitive manual labor leading to decreased physical strength and efficiency, making it difficult to keep up with the machine's pace, and unstable seed metering are the root causes of uneven seeding, limiting the widespread application of real-time seed-cutting models. Pre-cutting planters, on the other hand, place pre-cut seed stems into a seed box. Through mechanisms for seed feeding, orientation adjustment, seed control, and seed metering, the seed stems are separated, their orientation adjusted, and the seed quantity controlled, achieving continuous, precise, and controllable sowing. Pre-cutting cassava planters are currently the mainstream technology and the most promoted model. However, research on pre-cutting cassava planters has also encountered challenges, the most prominent being low sowing qualification index and high missing seeding index. To solve these problems, the Indian company KAMAL KISAN developed a roller planter, but its operating speed is low, and seed blockage frequently occurs. Chen Lintao et al. designed a stepped vibrating seed-distributing mechanism in the seed supply stage of the planter, and established a mathematical model of the movement process of cassava seed stalks on the stepped vibrating seed-distributing mechanism. They theoretically analyzed the downward movement of the cassava seed stalks relative to the seed-distributing plate and their throwing motion on the stepped attitude adjustment plate. Based on the discrete element method, they established a simulation model of the cassava seed stalk-vibrating seed-distributing mechanism. Single-factor simulation experiments clarified the influence of each factor on the success rate of lateral attitude adjustment and seed distribution. Mu Xiangwei et al., addressing the problems of difficult seed filling and low seeding qualification index in current pre-cut cassava precision planters, designed a spoon chain seed distributing mechanism in the planter. Based on the brachistochrone theory, they designed the parameters of the seed-scooping spoon of the seed distributing mechanism, and determined the order of significance of factors affecting seed filling performance as: spoon type, number of spoons, conveyor chain speed, and seed filling angle. Single-factor simulation was conducted using EDEM to obtain the influence of different experimental factors on seed filling performance; response surface methodology (BBD) simulation experiments were conducted to determine the optimal combination of factor parameters. Chen Lintao et al. designed a precision seed metering mechanism for pre-cut cassava seed tubers with a friction belt and a pre-cut hole. They established a simulation model of the seed tuber group and the friction belt based on the discrete element method, and analyzed the influence of various factors on the seed filling performance and the seed tuber group's behavior through single-factor simulation. He Fengguang et al. designed a single-segment cassava seed tuber metering device with an external grooved wheel. They analyzed the seed filling mechanism of the metering device, identified the factors affecting the seed filling performance, designed the structural parameters of the key components of the metering device, and established a virtual model of the metering device and cassava seed tubers using UG software. Su Wei et al. designed a chain-type pre-cut seed spoon metering device and conducted single-factor simulation experiments using EDEM. They analyzed the influence of different seed spoon inclination angles and the number of seed spoons on the seed filling performance. The simulation showed that the seed filling performance was better when the seed spoon inclination angle was 30° and the number of seed spoons was 15.

[0004] Analysis shows that the spoon-chain (drive chain + seed-scooping spoon) filling method is widely used in cassava planters, and similar applications exist in planters for other agricultural materials (sugarcane, potatoes, and garlic, etc.). However, filling a quantitative amount of seed stalks from the seed stalk group using the seed-scooping spoon has a certain degree of randomness, easily leading to missed filling and double filling. Further optimization of components, such as improving the filling method, is needed to ensure precise targeting of the seed-scooping spoon and improve machine performance. Therefore, based on the agronomic requirements of precision cassava planting, a double-chamber, single-segment cassava seed stalk planting mechanism is proposed. The main factors affecting filling performance and their value ranges are determined through theoretical analysis. A simulation model of the "seed stalk group-filling mechanism" is established based on the discrete element method. EDEM is used to simulate the filling of seed scoops with different structures, obtaining the optimal structure and working parameters. Single-factor simulation using EDEM clarifies the influence of seed stalk group filling thickness, the speed of the seed-scooping spoon in the first filling zone, and the filling speed ratio on filling performance. Based on the single-factor simulation results, a combined simulation experiment was designed to obtain the result set of each influencing factor on the experimental index. The optimal parameter combination of the filling mechanism was obtained using a combination of NSGA-II and Analytic Hierarchy Process (AHP). Finally, bench and field trials were conducted to verify the optimal parameter combination. The research results are intended to provide theoretical reference for the future development of precision cassava planters. Summary of the Invention

[0005] In summary, in view of the problems of poor seed filling effect, low seeding qualification index and high missing filling index of the pre-cut seed spoon chain cassava precision planter, the technical problem to be solved by the present invention is to provide a pre-cut seed double-seed chamber single-segment cassava seed stem planter.

[0006] The technical solution of this invention to solve the above-mentioned technical problems is as follows: A pre-cut seed double-slot single-section cassava seed tuber planter includes a frame, a furrowing mechanism, a double-filling mechanism, a soil covering mechanism, and a transmission component; the furrowing mechanism is located at the front of the frame and is used to loosen the soil and form two rows of planting furrows, and the upper middle part of the furrowing mechanism is connected to a tractor; there are two double-filling mechanisms, which are symmetrically located in the middle of the frame, and the two double-filling mechanisms respectively put cassava seed tubers into the two planting furrows, with each double-filling mechanism putting seed tubers in twice to avoid missing cassava seed tubers in the planting furrows; the soil covering mechanism is located at the rear of the frame and fully covers the cassava seed tubers in the planting furrows with soil; the transmission component is installed on the frame and is connected to drive the furrowing mechanism and the double-filling mechanism respectively.

[0007] In some possible implementations, the ditching mechanism includes a connecting device, a rotary tiller, a soil clearing device, and a ditching shovel; the connecting device, rotary tiller, soil clearing device, and ditching shovel are arranged sequentially at the front of the frame, and the connecting device is connected to the rear of the tractor; the rotary tiller loosens the soil and sends it to the soil clearing device, which then transports the soil to the left and right sides respectively; there are two ditching shovels, and the two ditching shovels respectively open seeding furrows on the soil transported to the left and right sides.

[0008] In some possible implementations, the rotary tillage device includes a rotary tillage connecting shaft, rotary tillage blades, a first gear, a second gear, a third gear, a first pulley, a first belt, and a second pulley; the rotary tillage connecting shaft is rotatably mounted on the ditching mechanism at a corresponding position; there are multiple sets of rotary tillage blades, and these multiple sets of rotary tillage blades are fixedly mounted on the rotary tillage connecting shaft; the third gear is fixedly mounted in the middle of the rotary tillage connecting shaft, the second gear meshes with the third gear, the first gear meshes with the second gear, and the second pulley is linked to the first gear;

[0009] The transmission component includes a first motor, the first pulley is mounted on the output end of the first motor, and the first pulley is connected to a second pulley via the first belt.

[0010] In some possible implementations, the soil clearing device includes a soil clearing auger, a third pulley, a second belt, and a fourth pulley; the soil clearing auger is rotatably mounted on the trenching mechanism at a corresponding position; the fourth pulley is fixedly fitted onto the middle of the soil clearing auger;

[0011] The transmission component includes a second motor, the third pulley is mounted on the output end of the second motor, and the third pulley is connected to the fourth pulley via the second belt.

[0012] In some possible implementations, each of the dual-filling mechanisms includes a first filling device, a second filling device, and a seed-protecting component; the first filling device, the second filling device, and the seed-protecting component are installed sequentially at corresponding positions on the frame, and the first filling device fills the second filling device with cassava seed stems from the rear, and the second filling device lifts the filled cassava seed stems upward and then drops them downward into the corresponding planting furrow via the seed-protecting component.

[0013] In some possible implementations, the second seed filling device includes a second seed filling chamber, a first sprocket, a second transmission chain, a second sprocket, and a seed-containing channel; the second sprocket and the first sprocket are respectively mounted vertically on the frame at corresponding positions, and the seed-containing channel and the second seed filling chamber are respectively mounted vertically on the frame at positions corresponding to the front side between the second sprocket and the first sprocket; the second transmission chain connects the second sprocket and the first sprocket, and one side of the second transmission chain passes through the second seed filling chamber and the seed-containing channel;

[0014] The first seed filling device includes a first seed filling chamber, a third sprocket, a fourth sprocket, a first transmission chain, and a first seed filling plate. The third sprocket is mounted on the frame at a position corresponding to the front side between the second sprocket and the first sprocket. The fourth sprocket is mounted on the frame at a position corresponding to the front side of the second sprocket, and the third and fourth sprockets are located above the second seed filling chamber, with the fourth sprocket positioned higher than the second sprocket. The first seed filling chamber is mounted on the frame at a position corresponding to the front side between the third and fourth sprockets. The first transmission chain connects the third and fourth sprockets, and one side of the first transmission chain passes through the first seed filling chamber.

[0015] A plurality of seed-scooping scoops are evenly arranged on the first transmission chain and the second transmission chain respectively; the seed-scooping scoops on the first transmission chain lift the cassava seed stems in the first seed filling chamber upward and then throw them into the seed-containing channel, and the cassava seed stems in the seed-containing channel then fall onto the corresponding seed-scooping scoops on the second transmission chain or into the second seed filling chamber; the seed-scooping scoops on the second transmission chain receive the cassava seed stems in the second seed filling chamber or receive the cassava seed stems thrown into the seed-containing channel by the seed-scooping scoops on the first transmission chain, and then lift them upward and throw them downward into the corresponding sowing furrow through the seed-protecting component.

[0016] In some possible implementations, a first seed filling plate is provided at the bottom of the first seed filling chamber corresponding to the position of the first transmission chain, and a second seed filling plate is provided at the bottom of the second seed filling chamber corresponding to the position of the second transmission chain. The seed scoop is installed on the first transmission chain or the second transmission chain via a T-shaped connecting chain plate.

[0017] In some possible implementations, the upper part of the first transmission chain is located above the seed-containing channel, and the top of the seed-containing channel is provided with a guide plate. The guide plate transfers the cassava seed stalks thrown by the seed-scooping spoon on the first transmission chain into the seed-containing channel, and then fills them into the corresponding seed-scooping spoon on the second transmission chain.

[0018] In some possible implementations, the transmission components include a third electric motor, a fourth electric motor, a first drive shaft, a second drive shaft, a third drive shaft, a fourth drive shaft, a fifth pulley, a third belt, a sixth pulley, a seventh pulley, a fourth belt, and an eighth pulley;

[0019] The first drive shaft is rotatably mounted on the frame at a corresponding position, and the third sprockets of the two first seed filling devices are respectively mounted on the first drive shaft; the second drive shaft is rotatably mounted on the frame at a corresponding position, and the fourth sprockets of the two first seed filling devices are respectively mounted on the second drive shaft; the fifth pulley is mounted on the output end of the third motor, the sixth pulley is mounted on the first drive shaft, and the third belt connects the fifth pulley and the sixth pulley;

[0020] The third drive shaft is rotatably mounted on the frame at a corresponding position, and the first sprockets of the two second seed filling devices are respectively mounted on the third drive shaft; the fourth drive shaft is rotatably mounted on the frame at a corresponding position, and the second sprockets of the two second seed filling devices are respectively mounted on the fourth drive shaft; the seventh pulley is mounted on the output end of the fourth motor, the eighth pulley is mounted on the third drive shaft, and the fourth belt connects the seventh pulley and the eighth pulley.

[0021] In some possible implementations, the covering mechanism includes a roller, a left covering shovel, a right covering shovel, and a covering baffle; the covering baffle is installed at a corresponding position on the frame, the roller is rotatably installed below the covering baffle, and the left and right covering shovels are respectively installed on the left and right sides behind the roller.

[0022] The beneficial effects of this invention are:

[0023] (1) Innovations were made to the core components of the cassava planter, and a pre-cut seed type double seed chamber single-segment cassava seed stem planting mechanism was designed. The double seed chamber single-segment cassava seed stem planting mechanism reduced the leakage index of the cassava precision planter and improved the planting qualification index.

[0024] (2) The rotary tillage device, soil clearing device and trenching shovel work together in the trenching mechanism to form two cassava seed stalk planting trenches, so that the soil is cleared on both sides of the trenching mechanism; the double filling mechanism uses the second filling device as the main filling device, and uses the first filling device to ensure that the number of seed stalks in the second filling area is not less than a single segment. If the number of seed stalks exceeds a single segment, the single segment of seed stalks is in the seed scoop of the second filling device, and the excess seed stalks are piled on top of the seed stalks in the seed scoop of the second filling device, presenting a layered filling state. The seed scoop of the second filling device continues to drive the seed stalks to move upward, and the balance of the excess seed stalks above will be broken. Under the action of their own gravity, they are backfilled into the second filling chamber. The seed stalks in the seed scoop of the second filling device are precisely planted through the seed guide tube of the seed protection component; after the soil covering mechanism backfills once through the roller, the soil covering shovel is used to level the soil to ensure that the cassava seed stalks are fully buried by the soil.

[0025] (3) By rationally arranging different modules, a continuous mechanized operation process is formed, which enables the double-slot single-section cassava seed planter to complete the entire process of rotary tillage and ditching, precision sowing, and soil covering in one go, ensuring the consistency of cassava seed planting depth and the compactness of soil covering, and effectively improving the overall operation efficiency. Attached Figure Description

[0026] Figure 1 This is a schematic diagram of the structure of the present invention;

[0027] Figure 2 This is a schematic diagram of the process flow of the present invention;

[0028] Figure 3 This is a structural diagram of the trenching mechanism of the present invention;

[0029] Figure 4 This is a structural diagram of the rotary tillage device of the ditching mechanism of the present invention;

[0030] Figure 5 This is a structural diagram of the trenching mechanism and soil-removing device of the present invention;

[0031] Figure 6 This is a structural diagram of the dual-charging mechanism of the present invention;

[0032] Figure 7 This is a structural diagram of the first charging device of the dual-charging mechanism of the present invention;

[0033] Figure 8 This is a cross-sectional view of the location of the filling chamber of the first filling device in the dual-filling mechanism of the present invention;

[0034] Figure 9 This is a structural diagram of the second charging device of the dual-charging mechanism of the present invention;

[0035] Figure 10 This is a cross-sectional view of the location of the seed filling chamber of the second seed filling device in the dual-filling mechanism of the present invention;

[0036] Figure 11 This is a cross-sectional view of the seed-containing channel position of the second seed-filling device in the dual-filling mechanism of the present invention;

[0037] Figure 12 This is a structural diagram of the soil covering mechanism of the present invention;

[0038] Figure 13 This is a schematic diagram of the power output of the third motor of the present invention;

[0039] Figure 14 This is a diagram illustrating the power output process of the third motor in this invention.

[0040] Figure 15 This is a schematic diagram of the power output of the fourth motor of the present invention;

[0041] Figure 16 This is a diagram illustrating the power output process of the fourth motor in this invention.

[0042] The attached diagram lists the components represented by each number as follows:

[0043] Rack 1;

[0044] 2. Ditching mechanism: connecting device 2-1, rotary tillage device 2-2, rotary tillage connecting shaft 2-2-1, rotary tillage blade 2-2-2, first gear 2-2-3, second gear 2-2-4, third gear 2-2-5, first pulley 2-2-6, first belt 2-2-7, second pulley 2-2-8; soil clearing device 2-3, soil clearing auger 2-3-1, third pulley 2-3-2, second belt 2-3-3, auger transmission box 2-3-4;

[0045] Dual filling mechanism 3: First seed filling device 3-1, first seed filling chamber 3-1-1, seed scoop 3-1-2, third sprocket 3-1-3, fourth sprocket 3-1-4, second transmission chain 3-1-5, T-shaped connecting chain plate 3-1-6, first seed filling plate 3-1-7; seed protection component 3-2; second seed filling device 3-3, second seed filling chamber 3-3-1, first sprocket 3-3-2, first transmission chain 3-3-3, second sprocket 3-3-4, seed receiving channel 3-3-5, second seed filling plate 3-3-6, guide plate 3-3-7;

[0046] Covering mechanism 4: roller 4-1, left covering shovel 4-2, right covering shovel 4-3, covering baffle 4-4;

[0047] Transmission component 5: First motor 5-1, Second motor 5-2, Third motor 5-3, Fourth motor 5-4, First drive shaft 5-5, Second drive shaft 5-6, Third drive shaft 5-7, Fourth drive shaft 5-8, Fifth pulley 5-9, Third belt 5-10, Sixth pulley 5-11, Seventh pulley 5-12, Fourth belt 5-13, Eighth pulley 5-14. Detailed Implementation

[0048] The principles and features of the present invention are described below with reference to the accompanying drawings. The examples given are only for explaining the present invention and are not intended to limit the scope of the present invention.

[0049] like Figure 1 and 2 As shown, a pre-cut seed-type double-slot single-section cassava seed tuber planter includes a frame 1, a furrowing mechanism 2, a double-filling mechanism 3, a soil-covering mechanism 4, and a transmission component 5. The furrowing mechanism 2, located at the front of the frame 1, loosens the soil and creates planting furrows. The upper middle part of the furrowing mechanism 2 is connected to a tractor. Two double-filling mechanisms 3 are provided, symmetrically positioned in the middle of the frame 1. Each double-filling mechanism 3 places cassava seed tubers into two planting furrows, performing two placements to avoid missing any cassava seed tubers in the planting furrows. The soil-covering mechanism 4 is located at the rear of the frame 1 and ensures that the cassava seed tubers in the planting furrows are fully covered with soil. The transmission component 5 is mounted on the frame 1 and connects to and drives the furrowing mechanism 2 and the double-filling mechanism 3.

[0050] like Figure 3 As shown, the ditching mechanism 2 includes a connecting device 2-1, a rotary tillage device 2-2, a soil clearing device 2-3, and a ditching shovel 2-4. The connecting device 2-1, rotary tillage device 2-2, soil clearing device 2-3, and ditching shovel 2-4 are arranged sequentially at the front of the frame 1. The rotary tillage device 2-2 loosens the soil and sends it to the soil clearing device 2-3, which then transports the soil to the left and right sides respectively. There are two ditching shovels 2-4, which respectively dig planting furrows (two rows) on the soil transported to the left and right sides by the soil clearing device 2-3. The furrowing grooves of the ditching shovels 2-4 face the soil clearing device 2-3, so that two cassava seed planting furrows are formed after rotary tillage and soil clearing.

[0051] like Figure 4As shown, the rotary tillage device 2-2 includes a rotary tillage connecting shaft 2-2-1, rotary tillage blades 2-2-2, a first gear 2-2-3, a second gear 2-2-4, a third gear 2-2-5, a first pulley 2-2-6, a first belt 2-2-7, a second pulley 2-2-8, and a rotary tillage transmission box 2-2-9. The rotary tillage connecting shaft 2-2-1 is rotatably mounted on the ditching mechanism 2 at a corresponding position. Multiple sets of rotary tillage blades 2-2-2 are fixedly mounted on the rotary tillage connecting shaft 2-2-1. The third gear 2-2-5 is fixedly mounted in the middle of the rotary tillage connecting shaft 2-2-1. The second gear 2-2-4 meshes with the third gear 2-2-5, the first gear 2-2-3 meshes with the second gear 2-2-4, and the second pulley 2-2-8 is linked to the first gear 2-2-3. The transmission component 5 includes a first motor 5-1, and a first pulley 2-2-6 is mounted on the output end of the first motor 5-1. The first pulley 2-2-6 is connected to the second pulley 2-2-8 via the first belt 2-2-7. The first motor 5-1 drives the first pulley 2-2-6, which in turn drives the second pulley 2-2-8 via the first belt 2-2-7. The second pulley 2-2-8 then transmits power sequentially through the meshing first gear 2-2-3, second gear 2-2-4, and third gear 2-2-5 to the rotary tillage connecting shaft 2-2-1, causing the rotary tillage blade 2-2-2 to rotate and loosen the soil. The rotary tiller 2-2-2 is tilted at a preset angle so that when the rotary tiller 2-1-2 rotates, it loosens the soil and sends it to the soil cleaning device 2-3. The soil cleaning device 2-3 then cleans and transports the soil to both sides to form ridges. Finally, the furrowing shovel 2-4 transports the excess soil in the cassava seed planting furrow to the soil cleaning device 2-3 for secondary cleaning to ensure the planting depth of the cassava seed planting furrow.

[0052] like Figure 5 The soil clearing device 2-3 shown includes a soil clearing auger 2-3-1, a third pulley 2-3-2, a second belt 2-3-3, and a fourth pulley 2-3-4. The soil clearing auger 2-3-1 is rotatably mounted on the trenching mechanism 2 at a corresponding position. The fourth pulley 2-3-4 is fixedly fitted onto the middle of the soil clearing auger 2-3-1. The transmission component 5 includes a second motor 5-2. The third pulley 2-3-2 is mounted on the output end of the second motor 5-2, and is connected to the fourth pulley 2-3-4 via the second belt 2-3-3. The second motor 5-2 drives the third pulley 2-3-2, which in turn drives the fourth pulley 2-3-4 via the second belt 2-3-3, ultimately causing the soil clearing auger 2-3-1 to rotate.

[0053] like Figure 6 As shown, each of the dual-filling mechanisms 3 includes a first filling device 3-1, a second filling device 3-3, and a seed-protecting component 3-2. The first filling device 3-1, the second filling device 3-3, and the seed-protecting component 3-2 are installed sequentially at corresponding positions on the frame 1. The first filling device 3-1 feeds cassava seed stems backward to the second filling device 3-3, and the second filling device 3-3 lifts the filled cassava seed stems upward and then lowers them into the corresponding planting furrow via the seed-protecting component 3-2.

[0054] like Figure 9-11 As shown, the second seed filling device 3-3 includes a second seed filling chamber 3-3-1, a first sprocket 3-3-2, a second transmission chain 3-3-3, a second sprocket 3-3-4, a seed-containing channel 3-3-5, and a second seed filling plate 3-3-6. The second sprocket 3-3-4 and the first sprocket 3-3-2 are respectively mounted vertically on the frame 1 at corresponding positions. The seed-containing channel 3-3-5 and the second seed filling chamber 3-3-1 are respectively mounted vertically on the frame 1 at positions corresponding to the front side between the second sprocket 3-3-4 and the first sprocket 3-3-2. The second transmission chain 3-3-3 connects the second sprocket 3-3-4 and the first sprocket 3-3-2, and one side of the second transmission chain 3-3-3 passes through the second seed filling chamber 3-3-1 and the seed-containing channel 3-3-5.

[0055] like Figure 7 and 8 As shown, the first seed filling device 3-1 includes a first seed filling chamber 3-1-1, a third sprocket 3-1-3, a fourth sprocket 3-1-4, a first transmission chain 3-1-5, and a first seed filling plate 3-1-7. The third sprocket 3-1-3 is mounted on the frame 1 at a position corresponding to the front side between the second sprocket 3-3-4 and the first sprocket 3-3-2. The fourth sprocket 3-1-4 is mounted on the frame 1 at a position corresponding to the front side of the second sprocket 3-3-4. The third sprocket 3-1-3 and the fourth sprocket 3-1-4 are located above the second seed filling chamber 3-3-1, with the fourth sprocket 3-1-4 positioned higher than the second sprocket 3-3-4. The first seed filling chamber 3-1-1 is installed on the frame 1 and is located at the front side between the third sprocket 3-1-3 and the fourth sprocket 3-1-4. The first transmission chain 3-1-5 connects the third sprocket 3-1-3 and the fourth sprocket 3-1-4, and one side of the first transmission chain 3-1-5 passes through the first seed filling chamber 3-1-1.

[0056] A plurality of seed-scooping spoons 3-1-2 are evenly arranged on the first transmission chain 3-1-5 and the second transmission chain 3-3-3, respectively. The seed-scooping spoons 3-1-2 on the first transmission chain 3-1-5 lift the cassava seed stems in the first seed filling chamber 3-1-1 upwards and then drop them into the seed-containing channel 3-3-5. The cassava seed stems in the seed-containing channel 3-3-5 then fall onto the corresponding seed-scooping spoons 3-1-2 on the second transmission chain 3-3-3 or into the second seed filling chamber 3-3-1. The seed-scooping spoons 3-1-2 on the second transmission chain 3-3-3 receive the cassava seed stems in the second seed filling chamber 3-3-1 or those dropped into the seed-containing channel 3-3-5 by the seed-scooping spoons 3-1-2 on the first transmission chain 3-1-5, then lift them upwards and drop them downwards into the corresponding planting furrow via the seed-protecting component 3-2.

[0057] A first filling plate 3-1-7 is provided at the bottom of the first filling chamber 3-1-1, corresponding to the position of the first transmission chain 3-1-5. A second filling plate 3-3-6 is provided at the bottom of the second filling chamber 3-3-1, corresponding to the position of the second transmission chain 3-3-3. The first filling plate 3-1-7 and the second filling plate 3-3-6 can smoothly fill the cassava seed tubers in the first filling chamber 3-1-1 and the second filling chamber 3-3-1 into the corresponding seed scooping spoons 3-1-2, respectively. The seed scooping spoons 3-1-2 are installed on the first transmission chain 3-1-5 or the second transmission chain 3-3-3 via a T-shaped connecting chain plate 3-1-6. The seed scooping spoons 3-1-2 and the T-shaped connecting chain plate 3-1-6 on the first filling device 3-1 and the second filling device 3-3 have the same specifications to ensure that each cassava seed tuber can be effectively transported to the planting area. The upper part of the first transmission chain 3-1-5 is located above the seed-containing channel 3-3-5. The top of the seed-containing channel 3-3-5 is provided with a guide plate 3-3-7, which transfers the cassava seed stems fed by the seed scoop 3-1-2 on the first transmission chain 3-1-5 into the seed-containing channel 3-3-5.

[0058] The cassava seed stems in the second filling chamber 3-3-1 are filled onto the seed scoop 3-1-2 on the second transmission chain 3-3-3 and received, and then lifted upwards along with the seed scoop 3-1-2 on the second transmission chain 3-3-3 (first filling). If the seed scoop 3-1-2 on the second transmission chain 3-3-3 does not receive the cassava seed stems during the first filling, the seed scoop 3-1-2 on the first transmission chain 3-1-5 will receive the cassava seed stems in the first filling chamber 3-1-1 and lift them upwards, finally sending the cassava seed stems into the seed receiving channel 3-3-5 to fill the seed scoop 3-1-2 on the second transmission chain 3-3-3. Specifically, as the second sprocket 3-3-4 and the second transmission chain 3-3-3 rotate, the cassava seed stems in the second filling chamber 3-3-1 are filled onto the seed scoop 3-1-2 on the second transmission chain 3-3-4. As the seed scoop 3-1-2 (on the second transmission chain 3-3-3) is lifted into the seed-containing channel 3-3-5, the cassava seed stems in the seed-containing channel 3-3-5 will fall onto the seed scoop 3-1-2 (on the second transmission chain 3-3-4) (second filling). If there are already cassava seed stems on the seed scoop 3-1-2 (on the second transmission chain 3-3-3), the cassava seed stems in the seed-containing channel 3-3-5 and the original cassava seed stems will be stacked on top of each other on the seed scoop 3-1-2 (on the second transmission chain 3-3-3). As the seed scoop 3-1-2 (on the second transmission chain 3-3-3) continues to move upwards, the balance of excess cassava seed stems above it is broken, and they are refilled into the second filling chamber 3-3-1 under their own gravity. Finally, after the cassava seed stems on the seed scoop 3-1-2 reach their highest position above the seed protection component 3-2, the scoop 3-1-2 flips over, causing the cassava seed stems to fall onto the seed protection component 3-2 and then reach the corresponding position in the planting furrow. This double-filling process ensures that each seed scoop 3-1-2 on the second transmission chain 3-3-3 is filled with a single segment of cassava seed stem before planting, reducing the leakage index of cassava seed stems in the precision cassava planter and preventing the omission of cassava seed stems in the planting furrow.

[0059] The transmission component 5 further includes a third motor 5-3, a fourth motor 5-4, a first transmission shaft 5-5, a second transmission shaft 5-6, a third transmission shaft 5-7, a fourth transmission shaft 5-8, a fifth pulley 5-9, a third belt 5-10, a sixth pulley 5-11, a seventh pulley 5-12, a fourth belt 5-13, and an eighth pulley 5-14. Figure 12 and 13As shown, the first drive shaft 5-5 is rotatably mounted on the frame 1 at a corresponding position, and the third sprockets 3-1-3 of the two first seed filling devices 3-1 are respectively mounted on the first drive shaft 5-5. The second drive shaft 5-6 is rotatably mounted on the frame 1 at a corresponding position, and the fourth sprockets 3-1-4 of the two first seed filling devices 3-1 are respectively mounted on the second drive shaft 5-6. The fifth pulley 5-9 is mounted on the output end of the third motor 5-3, and the sixth pulley 5-11 is mounted on the first drive shaft 5-5. The third belt 5-10 connects the fifth pulley 5-9 and the sixth pulley 5-11. The third drive shaft 5-7 is rotatably mounted on the frame 1 at a corresponding position, and the first sprockets 3-3-2 of the two second seed filling devices 3-3 are respectively mounted on the third drive shaft 5-7. The third motor 5-3 drives the fifth pulley 5-9, which in turn drives the sixth pulley 5-11 via belt drive. This transmits power to the first drive shaft 5-5, causing the third sprockets 3-1-3 of the two first seed filling devices 3-1 to drive the first drive chain 3-1-5. Then, the second drive shaft 5-6 drives the fourth sprocket 3-1-4, ensuring that the two first seed filling devices 3-1 operate at the same frequency.

[0060] like Figure 14 and 15 As shown, the fourth drive shaft 5-8 is rotatably mounted on the frame 1 at a corresponding position. The second sprockets 3-3-4 of the two second seed filling devices 3-3 are respectively mounted on the fourth drive shaft 5-8. The seventh pulley 5-12 is mounted on the output end of the fourth motor 5-4, and the eighth pulley 5-14 is mounted on the third drive shaft 5-7. The fourth belt 5-13 connects the seventh pulley 5-12 and the eighth pulley 5-14. The fourth motor 5-4 is connected to the seventh pulley 5-12 and drives the eighth pulley 5-14 through belt drive, transmitting power to the third drive shaft 5-7. This causes the first sprockets 3-3-2 of the two second seed filling devices 3-3 to simultaneously drive the second drive chain 3-3-3 to move, and then the fourth drive shaft 5-8 drives the second sprockets 3-3-4, ensuring that the second seed filling devices 3-3 operate at the same frequency.

[0061] like Figure 11As shown, the soil covering mechanism 4 includes a roller 4-1, a left soil covering shovel 4-2, a right soil covering shovel 4-3, and a soil covering baffle 4-4. The soil covering baffle 4-4 is installed at a corresponding position on the frame 1. The roller 4-1 is rotatably installed below the soil covering baffle 4-4. The left soil covering shovel 4-2 and the right soil covering shovel 4-3 are respectively installed on the left and right sides behind the roller 4-1. After the cassava seed tubers are sown into the planting furrows, the roller 4-1 pushes the soil on the ridge into the two cassava seed tuber planting furrows, so that the cassava seed tubers are initially covered by soil. Then, the left soil covering shovel 4-2 and the right soil covering shovel 4-3 push the remaining soil flat to ensure that the cassava seed tubers are fully buried by soil.

[0062] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A pre-cut seed-type double-chamber single-segment cassava seed tuber planter, characterized in that, The machine includes a frame (1), a ditching mechanism (2), a double-filling mechanism (3), a soil covering mechanism (4), and a transmission component (5). The ditching mechanism (2) is located at the front of the frame (1) and is used to loosen the soil and form two rows of planting furrows. The middle part of the ditching mechanism (2) is connected to the tractor. There are two double-filling mechanisms (3). The two double-filling mechanisms (3) are symmetrically located in the middle of the frame (1). The two double-filling mechanisms (3) respectively put cassava seed stems into the two planting furrows. Each double-filling mechanism (3) puts the seed stems in twice to avoid missing cassava seed stems in the planting furrows. The soil covering mechanism (4) is located at the rear of the frame (1) and makes the cassava seed stems in the planting furrows fully buried by the soil. The transmission component (5) is installed on the frame (1) and is connected to drive the ditching mechanism (2) and the double-filling mechanism (3) to run.

2. The pre-cut seed-type double-chamber single-segment cassava seed tuber planter according to claim 1, characterized in that, The ditching mechanism (2) includes a connecting device (2-1), a rotary tillage device (2-2), a soil cleaning device (2-3), and a ditching shovel (2-4). The connecting device (2-1), the rotary tillage device (2-2), the soil cleaning device (2-3), and the ditching shovel (2-4) are arranged in front of the frame (1) in a front-to-back order. The connecting device (2-1) is connected to the rear of the tractor. The rotary tillage device (2-2) loosens the soil and sends it to the soil cleaning device (2-3). The soil cleaning device (2-3) then transports the soil to the left and right sides respectively. There are two ditching shovels (2-4). The two ditching shovels (2-4) respectively open sowing furrows on the soil transported to the left and right sides.

3. The pre-cut seed-type double-chamber single-segment cassava seed tuber planter according to claim 2, characterized in that, The rotary tillage device (2-2) includes a rotary tillage connecting shaft (2-2-1), rotary tillage blades (2-2-2), a first gear (2-2-3), a second gear (2-2-4), a third gear (2-2-5), a first pulley (2-2-6), a first belt (2-2-7), and a second pulley (2-2-8); the rotary tillage connecting shaft (2-2-1) is rotatably mounted on the ditching mechanism (2) at a corresponding position; the rotary tillage blades (2-2-2) are in multiple sets. Multiple sets of rotary tillage blades (2-2-2) are fixedly mounted on the rotary tillage connecting shaft (2-2-1); the third gear (2-2-5) is fixed in the middle of the rotary tillage connecting shaft (2-2-1); the second gear (2-2-4) meshes with the third gear (2-2-5); the first gear (2-2-3) meshes with the second gear (2-2-4); and the second pulley (2-2-8) is linked to the first gear (2-2-3). The transmission component (5) includes a first motor (5-1), a first pulley (2-2-6) is mounted on the output end of the first motor (5-1), and the first pulley (2-2-6) is connected to the second pulley (2-2-8) through the first belt (2-2-7).

4. The pre-cut seed-type double-chamber single-segment cassava seed tuber planter according to claim 2, characterized in that, The soil clearing device (2-3) includes a soil clearing auger (2-3-1), a third pulley (2-3-2), a second belt (2-3-3), and a fourth pulley (2-3-4); the soil clearing auger (2-3-1) is rotatably mounted on the trenching mechanism (2) at a corresponding position; the fourth pulley (2-3-4) is fixedly fitted onto the middle of the soil clearing auger (2-3-1); The transmission component (5) includes a second motor (5-2), the third pulley (2-3-2) is mounted on the output end of the second motor (5-2), and the third pulley (2-3-2) is connected to the fourth pulley (2-3-4) through the second belt (2-3-3).

5. The pre-cut seed-type double-chamber single-segment cassava seed tuber planter according to claim 1, characterized in that, Each of the dual filling mechanisms (3) includes a first filling device (3-1), a second filling device (3-3), and a seed protection component (3-2); the first filling device (3-1), the second filling device (3-3), and the seed protection component (3-2) are installed in sequence at corresponding positions on the frame (1), and the first filling device (3-1) fills the second filling device (3-3) with cassava seed stems facing backward, and the second filling device (3-3) lifts the filled cassava seed stems upward and then drops them downward into the corresponding planting furrow through the seed protection component (3-2).

6. The pre-cut seed-type double-chamber single-segment cassava seed tuber planter according to claim 5, characterized in that, The second seed filling device (3-3) includes a second seed filling chamber (3-3-1), a first sprocket (3-3-2), a second transmission chain (3-3-3), a second sprocket (3-3-4), and a seed-containing channel (3-3-5); the second sprocket (3-3-4) and the first sprocket (3-3-2) are respectively installed vertically on the frame (1) at corresponding positions, and the seed-containing channel (3-3-5) and the second seed filling chamber (3-3-1) are respectively installed vertically on the frame (1) and at the front position between the second sprocket (3-3-4) and the first sprocket (3-3-2); the second transmission chain (3-3-3) connects the second sprocket (3-3-4) and the first sprocket (3-3-2), and one side of the second transmission chain (3-3-3) passes through the second seed filling chamber (3-3-1) and the seed-containing channel (3-3-5). The first seed filling device (3-1) includes a first seed filling chamber (3-1-1), a third sprocket (3-1-3), a fourth sprocket (3-1-4), a first transmission chain (3-1-5), and a first seed filling plate (3-1-7). The third sprocket (3-1-3) is mounted on the frame (1) and is positioned in front of the second sprocket (3-3-4) and the first sprocket (3-3-2). The fourth sprocket (3-1-4) is mounted on the frame (1) and is positioned in front of the second sprocket (3-3-4). The third sprocket (3-1-3) and the fourth sprocket (3-1-5) are mounted on the frame (1) and are positioned in front of the second sprocket (3-3-4). The fourth sprocket (3-1-4) is located above the second seed filling chamber (3-3-1), and the fourth sprocket (3-1-4) is positioned higher than the second sprocket (3-3-4). The first seed filling chamber (3-1-1) is mounted on the frame (1) and is located at the front side between the third sprocket (3-1-3) and the fourth sprocket (3-1-4). The first transmission chain (3-1-5) connects the third sprocket (3-1-3) and the fourth sprocket (3-1-4), and one side of the first transmission chain (3-1-5) passes through the first seed filling chamber (3-1-1). A plurality of seed-scooping spoons (3-1-2) are evenly arranged on the first transmission chain (3-1-5) and the second transmission chain (3-3-3). The seed-scooping spoons (3-1-2) on the first transmission chain (3-1-5) lift the cassava seed stems in the first seed filling chamber (3-1-1) upwards and throw them into the seed-containing channel (3-3-5). The cassava seed stems in the seed-containing channel (3-3-5) then fall onto the corresponding parts of the second transmission chain (3-3-3). The seed scoop (3-1-2) on the second transmission chain (3-3-3) or inside the second seed filling chamber (3-3-1); the seed scoop (3-1-2) on the second transmission chain (3-3-3) receives the cassava seed stalks in the second seed filling chamber (3-3-1) or receives the seed scoop (3-1-2) on the first transmission chain (3-1-5) and throws them into the seed receiving channel (3-3-5), and then lifts them upward and throws them downward into the corresponding sowing furrow through the seed protection component (3-2).

7. The pre-cut seed-type double-chamber single-segment cassava seed tuber planter according to claim 6, characterized in that, The bottom of the first seed filling chamber (3-1-1) is provided with a first seed filling plate (3-1-7) at the position corresponding to the first transmission chain (3-1-5), and the bottom of the second seed filling chamber (3-3-1) is provided with a second seed filling plate (3-3-6) at the position corresponding to the second transmission chain (3-3-3). The seed scoop (3-1-2) is installed on the first transmission chain (3-1-5) or the second transmission chain (3-3-3) through a T-shaped connecting chain plate (3-1-6).

8. The pre-cut seed-type double-chamber single-segment cassava seed tuber planter according to claim 6, characterized in that, The upper part of the first transmission chain (3-1-5) is located above the seed-containing channel (3-3-6). The top of the seed-containing channel (3-3-5) is provided with a guide plate (3-3-7). The guide plate (3-3-7) transfers the cassava seed stems fed by the seed scoop (3-1-2) on the first transmission chain (3-1-5) into the seed-containing channel (3-3-5), and then fills them into the corresponding seed scoop (3-1-2) on the second transmission chain (3-3-4).

9. The pre-cut seed-type double-chamber single-segment cassava seed tuber planter according to claim 6, characterized in that, The transmission component (5) includes a third motor (5-3), a fourth motor (5-4), a first transmission shaft (5-5), a second transmission shaft (5-6), a third transmission shaft (5-7), a fourth transmission shaft (5-8), a fifth pulley (5-9), a third belt (5-10), a sixth pulley (5-11), a seventh pulley (5-12), a fourth belt (5-13), and an eighth pulley (5-14). The first drive shaft (5-5) is rotatably mounted on the frame (1) at a corresponding position, and the third sprockets (3-1-3) of the two first seed filling devices (3-1) are respectively mounted on the first drive shaft (5-5); the second drive shaft (5-6) is rotatably mounted on the frame (1) at a corresponding position, and the fourth sprockets (3-1-4) of the two first seed filling devices (3-1) are respectively mounted on the second drive shaft (5-6); the fifth pulley (5-9) is mounted on the output end of the third motor (5-3), the sixth pulley (5-11) is mounted on the first drive shaft (5-5), and the third belt (5-10) connects the fifth pulley (5-9) and the sixth pulley (5-11). The third drive shaft (5-7) is rotatably mounted on the frame (1) at a corresponding position, and the first sprockets (3-3-2) of the two second seed filling devices (3-3) are respectively mounted on the third drive shaft (5-7); the fourth drive shaft (5-8) is rotatably mounted on the frame (1) at a corresponding position, and the second sprockets (3-3-4) of the two second seed filling devices (3-3) are respectively mounted on the fourth drive shaft (5-8); the seventh pulley (5-12) is mounted on the output end of the fourth motor (5-4), the eighth pulley (5-14) is mounted on the third drive shaft (5-7), and the fourth belt (5-13) connects the seventh pulley (5-12) and the eighth pulley (5-14).

10. The pre-cut seed-type double-chamber single-segment cassava seed tuber planter according to any one of claims 1 to 9, characterized in that, The soil covering mechanism (4) includes a roller (4-1), a left soil covering shovel (4-2), a right soil covering shovel (4-3), and a soil covering baffle (4-4). The soil covering baffle (4-4) is installed at a corresponding position on the frame (1). The roller (4-1) is rotatably installed below the soil covering baffle (4-4). The left soil covering shovel (4-2) and the right soil covering shovel (4-3) are respectively installed on the left and right sides behind the roller (4-1).

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