DESIGN AND EXPERIMENT OF A CLAMP-HOLDING PRECISION MAIZE-SEED-METERING DEVICE

Zhang, Xuejun; Cheng, Jinpeng; Shi, Zenglu; Zhang, Yunhe; Wang, Meijing

doi:10.1590/1809-4430-Eng.Agric.v42n6e20220049/2022

Acessibilidade / Reportar erro

Brasil

Español English

sumário « anterior atual seguinte »

Sumário

Technical Paper • Eng. agríc. 42 (6) • 2022 • https://doi.org/10.1590/1809-4430-Eng.Agric.v42n6e20220049/2022 copy

DESIGN AND EXPERIMENT OF A CLAMP-HOLDING PRECISION MAIZE-SEED-METERING DEVICE

Authorship SCIMAGO INSTITUTIONS RANKINGS

ABSTRACT

To solve the current problems of poor seeding stability and complex maintenance of maize seed-metering devices, a clamp-holding precision maize-seed-metering device is designed. The structure and working principle of the seed-metering device are described, the optimum state of maize seed clamping is analyzed, and the range of each working area of the seed-metering device is determined. The profile and structural parameters of the limit guide plate are designed by analyzing the laws of motion of the seed-picking block. A mechanical model of maize seeds under the critical state in each working area of the seed-metering device is established. The influence of the seed-metering device's rotational speed and the clamping force of the seed-picking block on the seeding performance are analyzed. A physical prototype of the seed-metering device was made for bench tests and field verification tests. The qualified, multiple seeding, and missed seeding rates of the designed seed-metering device were 94.21%, 3.52%, and 2.27%, respectively, meeting the agronomic requirements of maize sowing. The study provides theoretical guidance for designing and optimizing precision maize-seed-metering devices.

agricultural machinery; seed-metering device; maize; experiment; precision

Level	A (mm)	B (mm)	C (mm)
1	1.5	20	90
2	1.6	25	93
3	1.7	30	96

No.		Experimental factors				Qualified rate /%	Multiple seeding rate /%	Missed seeding rate /%

		A	B	C	D
1		1	1	1	1	89.32	3.84	6.84
2		1	2	2	2	95.54	2.98	1.48
3		1	3	3	3	86.15	6.72	7.13
4		2	1	2	3	95.86	2.78	1.36
5		2	2	3	1	94.21	4.77	1.02
6		2	3	1	2	87.52	4.72	7.76
7		3	1	3	2	89.75	6.98	3.27
8		3	2	1	3	91.73	3.95	4.32
9		3	3	2	1	90.05	5.72	4.23
Qualified rate	k₁	90.34	91.64	89.52	91.19
	k₂	92.53	93.83	93.82	90.94
	k₃	90.51	87.91	90.04	91.25
	R₁	2.19	5.92	4.29	0.31
				Factor priorities: B > C > A
				Better combination: A₂B₂C₂
Multiple seeding rate	k₁	4.51	4.53	4.17	4.78
	k₂	4.09	3.9	3.83	4.89
	k₃	5.55	5.72	6.16	4.48
	R₂	1.46	1.82	2.33	0.41
				Factor priorities: C > B > A
				Better combination: A₂B₂C₂
Missed seeding rate	k₁	5.15	3.82	6.31	4.03
	k₂	3.38	2.27	2.36	4.17
	k₃	3.94	6.37	3.81	4.27
	R₃	1.77	4.10	3.95	0.24
				Factor priorities: B > C > A
				Better combination: A₂B₂C₂

No.	Qualified rate	Multiple seeding rate	Missed seeding rate
1	94.36	3.19	2.18
2	93.81	3.51	2.24
3	94.46	3.86	2.39
Average	94.21	3.52	2.27

Associação Brasileira de Engenharia Agrícola SBEA - Associação Brasileira de Engenharia Agrícola, Departamento de Engenharia e Ciências Exatas FCAV/UNESP, Prof. Paulo Donato Castellane, km 5, 14884.900 | Jaboticabal - SP, Tel./Fax: +55 16 3209 7619 - Jaboticabal - SP - Brazil
E-mail: revistasbea@sbea.org.br

Acompanhe os números deste periódico no seu leitor de RSS

[1] 1* Corresponding author. College of Mechanical and Electrical Engineering, Xinjiang Agricultural University/ Urumqi, China. E-mail: tuec@163.com