Design and Experiment of Vertical Groove Seed Feeding Device in Air-assisted Centralized Metering Device for Rapeseed and Wheat

被引：0

作者：

Shi, Binbin ^{[1
]}

Wang, Chuanqi ^{[1
]}

Chen, Xueer ^{[1
]}

He, Kaiwei ^{[1
]}

Liao, Qingxi ^{[1
,2
]}

Liao, Yitao ^{[1
,2
]}

机构：

[1] College of Engineering, Huazhong Agricultural University, Wuhan

[2] Key Laboratory of Agricultural Equipment in Mid-lower Yangtze River, Ministry of Agriculture and Rural Affairs, Wuhan

来源：

Nongye Jixie Xuebao/Transactions of the Chinese Society for Agricultural Machinery | 2024年 / 55卷 / 09期

关键词：

air-assisted centralized metering device; rapeseed; variable volume of seed space; vertical groove seed feeding device; wheat;

D O I：

10.6041/j.issn.1000-1298.2024.09.008

中图分类号：

学科分类号：

摘要：

Aiming at the problems of complex seeding structures and insufficient seeding rates under high-volume conditions in existing pneumatic seeding devices for both rapeseed and wheat, a vertical trough high-throughput seeding device was designed. The working principle of the seeding device was expounded, the main structural parameters of the variable volume seeding mechanism were determined, the effects of working parameters such as seeding speed and the extension length of vertical trough wheel blades on the seeding performance for rapeseed and wheat were analyzed, and the optimal working parameter ranges for the seeding performance of rapeseed and wheat were clarified. The EDEM simulation test results showed that vertical trough seed supply device had good arch-breaking and seed-filling performance, as well as consistency of seed movement trajectory during seed supply. When the seeding speed for wheat was not less than 20 r/min and the blade extension length was not less than 9 mm, it can effectively avoid pulsation seeding issues and achieve stable seeding for both rapeseed and wheat. Bench test results indicated that when seeding rapeseed at a seeding speed of 10 ~ 30 r/min, the seeding device's seeding rate can reach 66.20 ~ 210.41 g/min, with coefficient of variation for seeding rate stability of less than 2. 3% and seed breakage rate of less than 0. 65% . When seeding wheat at seeding speed of 20 ~ 50 r/min and blade extension length of 9 ~ 21 mm, the seeding device's seeding rate can reach 1 184. 20 ~ 6 080. 44 g/min, with coefficient of variation for seeding rate stability of less than 1. 9% and seed breakage rate of less than 0. 4% . Field test results showed that when the seeding rates for rapeseed and wheat was 6. 5 kg/hm and 180 kg/hm , respectively, the total seeding errors for the seeder equipped with the vertical trough seeding device was 1. 68% and 4. 16% , respectively. Post-emergence measurements indicated that the average plant spacing for rapeseed and wheat was 56. 96 mm and 23. 34 mm, respectively, and the coefficient of variation of the consistency of each row was 16. 92% and 18. 02% , respectively, meeting the standard requirements of seeding operations. © 2024 Chinese Society of Agricultural Machinery. All rights reserved.

引用

页码：102 / 115

页数：13

共 26 条

[1]

CONG Jinling, Study on seeding system and mechanism of pneumatic precision metering device for wheat and rapeseed[D], (2014)

[2]

LEI Xiaolong, Design and working mechanism of air-assisted centralized metering device for rapeseed and wheat[ D], (2017)

[3]

GAO Xiaojun, YU Laiyuan, WU Xiaopeng, Et al., Design and experiment of intelligent seed supply system of air-assisted high speed precision maize seed metering device [ J ], Transactions of the Chinese Society for Agricultural Machinery, 54, pp. 66-75, (2023)

[4]

LIAO Qingxi, CAO Mei, WANG Baoshan, Et al., Design and experiment of slotted-tooth spoon hole and air-assisted precision centralized metering device for sesame [ J ], Transactions of the Chinese Society for Agricultural Machinery, 54, 8, pp. 65-76, (2023)

[5]

LEI Xiaolong, LIAO Yitao, CONG Jinling, Et al., Parameter optimization and experiment of air-assisted centralized seed-metering device of direct seeding machine for rape and wheat [ J ], Transactions of the CSAE, 34, 12, pp. 16-26, (2018)

[6]

LI Xiaoran, LIAO Qingxi, WANG Lei, Et al., Design and experiments of the type-hole wheel with high-speed air-assisted centralized metering device for rice, wheat and rapeseed [ J], Transactions of the CSAE, 39, 14, pp. 35-48, (2023)

[7]

WANG Lei, SHU Caixia, XI Rijing, Et al., Research on seed feeding device with constant width polygon groove-tooth wheel of air-assisted centralized metering device for wheat [ J ], Transactions of the Chinese Society for Agricultural Machinery, 53, 8, pp. 53-63, (2022)

[8]

YAO Lu, LIAO Qingxi, WANG Lei, Et al., Design and experiment of spiral seed feeding device in spinning disc high-speed metering device for rapeseed[ J], Transactions of the Chinese Society for Agricultural Machinery, 53, 6, pp. 78-88, (2022)

[9]

LEI Xiaolong, LIAO Yitao, LI Zhaodong, Et al., Design of seed churning device in air-assisted centralized metering device for rapeseed and wheat and experiment on seed filling performance [ J], Transactions of the CSAE, 32, 18, pp. 26-34, (2016)

[10]

ZHOU Haibo, LIANG Qiuyan, WEI Tianlu, Et al., Design and experiment of quantitative seed supply device with fluted roller used for double-vibrating precision seed meter [ J ], Transactions of the Chinese Society for Agricultural Machinery, 47, pp. 57-61, (2016)

← 1 2 3 →