CN-122004019-A - Pre-cutting seed type double-seed-chamber single-section cassava seed stem seeder

CN122004019ACN 122004019 ACN122004019 ACN 122004019ACN-122004019-A

Abstract

The invention relates to a pre-cutting type double-seed-chamber single-section cassava seed stem seeder which comprises a frame, a ditching mechanism, double-filling mechanisms, a soil covering mechanism and a transmission part, wherein the ditching mechanism is used for loosening soil to form two rows of ridges, sowing grooves are formed in the ridges, the upper part of the middle of the ditching mechanism is connected with a tractor, two double-filling mechanisms are arranged and are used for respectively throwing cassava seed stems into the two sowing grooves, each double-filling mechanism is used for throwing the seed stems twice so as to avoid the situation that the cassava seed stems are missed in the sowing grooves, the soil covering mechanism is arranged at the rear part of the frame and enables the cassava seed stems in the sowing grooves to be fully buried by the soil, and the transmission part is respectively connected with and drives the ditching mechanism and the double-filling mechanism to operate. The method can effectively reduce the miss-filling index of the cassava seed stems, improve the qualified index of the cassava seed stems, is favorable for realizing the accurate planting of the cassava seed stems, and has practical popularization value.

Inventors

CHEN LINTAO
WANG JUN
CHEN WENJIN
PENG XIAOJUN
JIANG MINGHUI
WANG MINNA
CHEN ZEYU
LAN YUNJUN
Li Menxuan

Assignees

广西师范大学

Dates

Publication Date: 20260512
Application Date: 20260407

Claims (10)

1. The double-seed-chamber single-section cassava seed stem seeder is characterized by comprising a frame (1), a ditching mechanism (2), a double-filling mechanism (3), a soil covering mechanism (4) and a transmission part (5), wherein the ditching mechanism (2) is positioned at the front part of the frame (1) and is used for loosening soil to form two rows of seeding furrows, the upper part of the middle part of the ditching mechanism (2) is connected with a tractor, the double-filling mechanism (3) is provided with two, the two double-filling mechanisms (3) are symmetrically positioned at the middle part of the frame (1), the two double-filling mechanisms (3) respectively throw cassava seed stems into the two seeding furrows, each double-filling mechanism (3) throws the seed stems twice to avoid the situation that the cassava seed stems are missed in the seeding furrows, the soil covering mechanism (4) is positioned at the rear part of the frame (1) and enables the seed stems in the seeding furrows to be fully buried by the soil, and the transmission part (5) is mounted on the frame (1) and is respectively connected with the two double-filling mechanisms (3) to drive the ditching mechanism (3) to operate.
2. The pre-cutting type double-chamber single-section cassava seed stem seeder according to claim 1 is characterized in that the ditching mechanism (2) comprises a connecting device (2-1), a rotary tillage device (2-2), a soil cleaning device (2-3) and ditching shovels (2-4), wherein the connecting device (2-1), the rotary tillage device (2-2), the soil cleaning device (2-3) and the ditching shovels (2-4) are sequentially arranged at the front part of the frame (1) in sequence, the connecting device (2-1) is connected with the rear part of a tractor, the rotary tillage device (2-2) is used for loosening soil and then conveying the soil to the soil cleaning device (2-3), the soil cleaning device (2-3) is used for conveying the soil to the left side and the right side respectively, two ditching shovels (2-4) are used for opening sowing ditches on the soil conveyed to the left side and the right side respectively.
3. The pre-cut seed type double-chamber single-section cassava seed stem planter according to claim 2, wherein the rotary tillage device (2-2) comprises 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 belt pulley (2-2-6), a first belt (2-2-7) and a second belt pulley (2-2-8), the rotary tillage connecting shaft (2-2-1) is rotatably arranged at a corresponding position on the ditching mechanism (2), a plurality of groups of rotary tillage blades (2-2-2) are fixedly sleeved on the rotary tillage connecting shaft (2-2-1), the third gear (2-2-5) is fixedly sleeved on the middle part of the rotary tillage connecting shaft (2-2-1), the second gear (2-2-4) is meshed with the third gear (2-2-5) and the second gear (2-2-4) is meshed with the first gear (2-2-3), the second belt pulley (2-2-8) is in linkage connection with the first gear (2-2-3); The transmission part (5) comprises a first motor (5-1), the first belt pulley (2-2-6) is arranged on the output end of the first motor (5-1), and the first belt pulley (2-2-6) is connected with the second belt pulley (2-2-8) through the first belt (2-2-7).
4. The pre-cut seed type double-chamber single-section cassava seed stem planter according to claim 2 is characterized in that the soil cleaning device (2-3) comprises a soil cleaning auger (2-3-1), a third belt pulley (2-3-2), a second belt (2-3-3) and a fourth belt pulley (2-3-4), wherein the soil cleaning auger (2-3-1) is rotatably arranged at a corresponding position on the ditching mechanism (2), and the fourth belt pulley (2-3-4) is fixedly sleeved at the middle part of the soil cleaning auger (2-3-1); The transmission part (5) comprises 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) by the second belt (2-3-3).
5. The pre-cut seed type double-chamber single-section cassava seed stem planter according to claim 1 is characterized in that each double-filling mechanism (3) comprises a first seed filling device (3-1), a second seed filling device (3-3) and a seed protection component (3-2), the first seed filling device (3-1), the second seed filling device (3-3) and the seed protection component (3-2) are sequentially arranged at corresponding positions on the frame (1), the first seed filling device (3-1) fills cassava seed stems into the second seed filling device (3-3) backwards, and the second seed filling device (3-3) lifts the filled cassava seed stems upwards and then drops the same into corresponding sowing ditches through the seed protection component (3-2).
6. The pre-cut seed type double-chamber single-stage cassava seed stem planter according to claim 5, characterized in that the second seed filling device (3-3) comprises 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), wherein the second sprocket (3-3-4) and the first sprocket (3-3-2) are respectively arranged at corresponding positions on the frame (1) up and down, the seed containing channel (3-3-5) and the second seed filling chamber (3-3-1) are respectively arranged on the frame (1) up and down and correspond to the position on the front side between the second sprocket (3-3-4) and the first sprocket (3-3-2), the second transmission chain (3-3-3) links the second sprocket (3-4) and the first sprocket (3-3-2) with the second sprocket (3-3-3-3) and the second sprocket (3-3-3-2) through the second sprocket (3-3-3-3) and the second sprocket (3-3-3-3) runs through the second sprocket (3-3-2); The first seed filling device (3-1) comprises a first seed filling chamber (3-1-1), a third chain wheel (3-1-3), a fourth chain wheel (3-1-4), a first transmission chain (3-1-5) and a first seed filling plate (3-1-7), wherein the third chain wheel (3-1-3) is arranged on the frame (1) and corresponds to the position of the front side between the second chain wheel (3-3-4) and the first chain wheel (3-3-2), the fourth chain wheel (3-1-4) is arranged on the frame (1) and corresponds to the position of the front side of the second chain wheel (3-3-4), the third chain wheel (3-1-3) and the fourth chain wheel (3-1-4) are arranged above the second seed filling chamber (3-3-1), the position of the fourth chain wheel (3-1-4) is higher than the position of the second chain wheel (3-3-4) and corresponds to the position of the front side between the first chain wheel (3-3-1-4) and the frame (1-3-4), the first transmission chain (3-1-5) links the third chain wheel (3-1-3) and the fourth chain wheel (3-1-4), and one side of the first transmission chain (3-1-5) penetrates through the first seed filling chamber (3-1-1); The first transmission chain (3-1-5) and the second transmission chain (3-3-3) are respectively and uniformly provided with a plurality of seed scoops (3-1-2), the seed scoops (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 deliver the cassava seed stems into the seed containing channel (3-3-5), the cassava seed stems in the seed containing channel (3-3-5) drop onto the corresponding seed scoops (3-1-2) on the second transmission chain (3-3-3) or into the second seed filling chamber (3-3-1), and the seed scoops (3-1-2) on the second transmission chain (3-3) receive the cassava seed stems in the second seed filling chamber (3-3-1) or the cassava seed scoops (3-1-5) on the first transmission chain (3-1) and deliver the cassava seed stems to the corresponding seed protection channel (3-2) upwards and deliver the seed protection component (3-2) to the seed protection channel.
7. The pre-cut seed type double-chamber single-section cassava seed stem planter according to claim 6 is characterized in that a first seed filling plate (3-1-7) is arranged at the position of the bottom of the first seed filling chamber (3-1-1) corresponding to the first transmission chain (3-1-5), a second seed filling plate (3-3-6) is arranged at the position of the bottom of the second seed filling chamber (3-3-1) corresponding to the second transmission chain (3-3), and the seed scooping spoon (3-1-2) is mounted 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-section cassava seed stem planter according to claim 6, wherein the upper part of the first transmission chain (3-1-5) is positioned above the seed containing channel (3-3-6), a guide plate (3-3-7) is arranged at the top of the seed containing channel (3-3-5), and the guide plate (3-3-7) is used for transferring cassava seed stems delivered by a seed scooping spoon (3-1-2) on the first transmission chain (3-1-5) into the seed containing channel (3-3-5) and refilling the cassava seed stems on the second transmission chain (3-3-4) onto the corresponding seed scooping spoon (3-1-2).
9. The pre-cut seed type double-chamber single-stage cassava seed stem planter according to claim 6, wherein said transmission means (5) comprises 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 transmission shaft (5-5) is rotatably arranged at a corresponding position on the frame (1), the third chain wheels (3-1-3) of the two first seed filling devices (3-1) are respectively sleeved on the first transmission shaft (5-5), the second transmission shaft (5-6) is rotatably arranged at a corresponding position on the frame (1), the fourth chain wheels (3-1-4) of the two first seed filling devices (3-1) are respectively sleeved on the second transmission shaft (5-6), the fifth belt wheel (5-9) is arranged at the output end of the third motor (5-3), the sixth belt wheel (5-11) is sleeved on the first transmission shaft (5-5), and the third belt (5-10) is connected with the fifth belt wheel (5-9) and the sixth belt wheel (5-11); The novel seed filling machine comprises a frame (1), a third transmission shaft (5-7), first chain wheels (3-3-2) of two second seed filling devices (3-3) and a fourth belt (5-13), wherein the third transmission shaft (5-7) is rotatably arranged at the corresponding position on the frame (1), the second chain wheels (3-3-4) of the two second seed filling devices (3-3) are rotatably arranged at the corresponding position on the frame (1) in a sleeved mode, the seventh belt wheel (5-12) is arranged at the output end of the fourth motor (5-4), the eighth belt wheel (5-14) is sleeved on the third transmission shaft (5-7), and the fourth belt (5-13) is connected with the seventh belt wheel (5-12) and the eighth belt wheel (5-14).
10. The pre-cut seed double-chamber single-section cassava seed stem planter according to any one of claims 1 to 9, wherein the earthing mechanism (4) comprises a roller (4-1), a left earthing shovel (4-2), a right earthing shovel (4-3) and an earthing baffle (4-4), wherein the earthing baffle (4-4) is mounted on the frame (1) at corresponding positions, the roller (4-1) is rotatably mounted below the earthing baffle (4-4), and the left earthing shovel (4-2) and the right earthing shovel (4-3) are mounted on the left and right sides behind the roller (4-1) respectively.

Description

Pre-cutting seed type double-seed-chamber single-section cassava seed stem seeder Technical Field The invention relates to the field of agricultural engineering, in particular to a pre-cut seed type double-seed-chamber single-section cassava seed stem seeder. Background Cassava plays a key role in protecting the grain safety of 8 hundred million people in tropical and subtropical areas as a global important strategic cash crop. The unique biomass characteristics make the biomass become a core raw material of bio-based economy, and the biomass has irreplaceability in the fields of food industry (starch processing), renewable energy sources (fuel ethanol), green manufacturing (degradable materials) and the like. However, due to the special morphological characteristics of seed stems and the requirements of planting agriculture, the current cassava sowing link is mainly the traditional manual operation, the stems are manually segmented into 10-15 cm stem segments, and sowing is completed by adopting planting modes such as flat, oblique insertion or direct insertion after ditching, and the link accounts for more than 60% of the labor intensity of the whole production period, so that the industrial scale development is obviously restricted. The research of the global cassava precision seeding technology shows obvious regional characteristics, main producing countries such as Brazil, nigeria and Thailand make breakthrough progress in the field of research and development of real-time seed cutting seeding equipment, and statistics data of China by the end of 2024 show that the cassava precision seeding mechanization rate is only 2.94%, and the labor cost is 7-8 times of that of the mechanized production country. The grain safety strategy in China constitutes a potential threat. Therefore, aiming at the physical characteristics of cassava seed stems, developing a cassava precision seeder with excellent performance and reliable work becomes a key technical requirement for breaking through the development bottleneck of industry and constructing a modern cassava production system. The precision seeder is one of core components of the cassava seeder and mainly comprises a real-time seed cutting mode and a pre-seed cutting mode. The research of the cassava planter at home and abroad is concentrated on the whole machine design and optimization of the real-time seed cutting machine type, and both the manual auxiliary seed feeding and the extensive seed discharging modes are adopted. The labor intensity and efficiency are reduced due to repeated labor for a long time, the rhythm of the whole machine cannot be kept up, the unstable seed sowing is a root cause of uneven seed sowing, and the popularization and the application of the real-time seed cutting machine type are limited. The pre-cut seed type seeder is adopted, the pre-cut seed stems are put into a seed box, seed stem groups are separated, the gesture adjustment sequencing and the seed quantity control are carried out through mechanisms such as seed supply, gesture adjustment, seed control and seed metering, continuous accurate and controllable seeding is realized, and the pre-cut seed type cassava seeder is a main stream technology and a main pushing type in the current research. However, the research of the pre-cut seed type cassava seeder also encounters the problems of low seeding qualification index and high miss-filling index. To solve these problems, india KAMAL KISAN developed a roller seeder, but the operation speed was low and seed blocking occurred at some time. Chen Lintao et al design a ladder type vibration seed dispersion mechanism in a seed supply link of a seeder, establish a mathematical model of the movement process of the cassava seed stems on the ladder type vibration seed dispersion mechanism, carry out theoretical analysis on the sliding movement of the cassava seed stems relative to the seed dispersion plate and the throwing movement of the cassava seed stems on the ladder type gesture adjusting plate, establish a simulation model of the cassava seed stems-vibration seed dispersion mechanism based on a discrete element method, and define the influence rules of each factor on the transverse gesture adjusting success rate and the seed dispersion conveying success rate through a single factor simulation test. Mou Xiangwei, aiming at the problems of difficulty in seed filling, low seeding qualification index and the like of the existing pre-cut seed type cassava precision seeder, a spoon chain seed metering mechanism is designed in the seeder, parameter design is carried out on a seed scooping spoon of the seed metering mechanism based on the maximum speed line descending theory, the significant primary and secondary sequences of factors affecting the seed filling performance are determined to be the type of the seed scooping spoon, the number of the seed scooping spoons, the movement speed of a conveying chain and the seed filling inclination an