Parameter optimization experiment of seedling guiding tube transplanting machine of Panax notoginseng seedling

doi:10.3969/j.issn.1004-1524.2022.03.22

Acta Agriculturae Zhejiangensis ›› 2022, Vol. 34 ›› Issue (3): 614-625.DOI: 10.3969/j.issn.1004-1524.2022.03.22

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Parameter optimization experiment of seedling guiding tube transplanting machine of Panax notoginseng seedling

QIN Wei¹(), YU Yingjie¹^,^*(), LAI Qinghui¹, ZHAN Caixue², YUAN Haikuo³, ZHANG Haijun¹

1. Faculty of Modern Agricultural Engineering, Kunming University of Science and Technology, Kunming 650500, China
2. Nanjing Institute of Agricultural Mechanization, Ministry of Agriculture and Rural Affairs, Nanjing 210014, China
3. College of Biological and Agricultural Engineering, Jilin University, Changchun 130022, China

Received:2020-09-20 Online:2022-03-25 Published:2022-03-30
Contact: YU Yingjie

Abstract

Abstract:

In order to realize the directional transplanting of Panax notoginseng seedlings, a seedling guiding tube transplanting machine of P. notoginseng seedlings was designed. The directional process and the mechanism of the seedling guiding process during the operation of the seedling guiding tube transplanting machine of P. notoginseng seedlings were analyzed, and the main factors affecting the planting of seedlings were determined. The single-factor simulation test of the directional process was carried out by using EDEM software, the directional platform was built according to the simulation test results, the orthogonal test of the directional performance of the directional mechanism was carried out, and the better parameter working combination of the directional mechanism was determined. The operating speed of the unit, the rotation speed of the directional plate and the inclination angle of the seedling guide tube were selected as the experimental factors, the orthogonal rotation combined test with three factors and five level was carried out and a mathematical model of the qualified rate of planting spacing and replanting rate were established, and the influence of the interaction of various experimental factors on the qualified rate of plant spacing and replanting rate was analyzed. The optimal combination of parameters of the transplanting machine obtained by response surface method of central composite. The results showed that when the inclination angle of the seedling guide tube was fixed at 74.32°, the bench forward speed of the unit was 0.95-1.11 km·h^-1, the rotation speed of the directional plate was 24.32-27.57 r·min^-1, the qualified rate of the plant spacing was more than 90%, and the replanting rate was less than 5%. In order to verify the reliability of the optimization results, the verification test of the performance of the transplanting machine was carried out, the bench forward speed of the unit was 1 km·h^-1, the rotation speed of the directional plate was 25 r·min^-1, and the inclination angle of the seedling guide tube was 75°. At this time, the qualified rate of plant spacing was 90.6%, the replanting rate was 4.2%. The results were in accordance with the national standard, meeting the agronomic requirements of P. notoginseng seedling transplanting.

Key words: seedling guiding tube, Panax notoginseng, transplanting machine, directional, response surface method

CLC Number:

S223.9

QIN Wei, YU Yingjie, LAI Qinghui, ZHAN Caixue, YUAN Haikuo, ZHANG Haijun. Parameter optimization experiment of seedling guiding tube transplanting machine of Panax notoginseng seedling[J]. Acta Agriculturae Zhejiangensis, 2022, 34(3): 614-625.

Figures/Tables 21

Fig.1 Structure of seedling guiding tube transplanting machine of P.notoginseng seedling 1, Ditcher; 2, Frame; 3, Motor; 4, Synchronous belt Ⅰ; 5, Synchronous belt Ⅱ; 6, Seedling plate; 7, Seedling hopper; 8, Directional bucket; 9, Directional plate; 10, Fixed ring; 11, Intermediate receptacle tube; 12, Seedling tube; 13, Packer wheel.

Fig.2 Structure diagram of P.notoginseng seedlings

Fig.3 The directional process of P.notoginseng seedlings

Fig.4 Force diagram of P.notoginseng seedling in directional process

Fig.5 Movement sketch of seedlings falling into intermediate receptacle tube

Fig.6 Movement sketch of seedlings falling into seedling tube

Fig.7 Movement sketch of seedlings falling into ground

Fig.8 Particle filling

Fig.9 Directional mechanism model

Fig.10 Directional mechanism simulation test

Fig.11 Influence of various factors on directional qualification rate

Fig.12 Directional mechanism

Table 1 Code of test factors

水平 Level	试验因素Test factors
水平 Level	A/(r·min^-1)	B/°	C
1	20	15	一级Grade 1
2	25	20	二级Grade 2
3	30	25	三级Grade 3

Table 2 Experimental scheme and test results

序号 No.	A	B	C	B×C	X/%
1	1	1	1	1	79.21
2	1	2	2	2	89.35
3	1	3	3	3	82.30
4	2	1	2	3	74.31
5	2	2	3	1	76.73
6	2	3	1	2	72.56
7	3	1	3	2	57.33
8	3	2	1	3	65.11
9	3	3	2	1	61.29
X /%	86.32	70.28	72.29	72.41
	74.52	76.93	74.98	73.08
	61.24	72.05	72.12	73.91
	25.08 a	6.65 b	2.86 c	1.50

Table 3 Variance analysis

方差来源 Sources	SS	df	F	P
A	759.91	2	225.34	0.004 4
B	74.22	2	22.01	0.043 5
C	15.46	2	4.59	0.179 0
误差Error	3.37	2
总和Sum	852.97	8

Fig.13 Bench test of transplanting machine

Table 4 Code of test factors

编码 Code	试验因素Test factors
编码 Code	D₁/(km·h^-1)	D₂/(r·min^-1)	D₃/°
-1.682	0.8	20	60
-1	0.88	22	65
0	1.0	25	75
1	1.12	28	80
1.682	1.2	30	85

Table 5 Test design scheme and results

序号 No.	试验因素Test factors			试验结果Test results
序号 No.	D₁/ (km·h^-1)	D₂/ (r·min^-1)	D₃/(°)	Y₁/%	Y₂/%
1	-1	-1	-1	65.2	18.1
2	1	-1	-1	71.6	13.7
3	-1	1	-1	67.7	15.6
4	1	1	-1	80.4	7.1
5	-1	-1	1	73.4	9.5
6	1	-1	1	70.5	12.4
7	-1	1	1	82.2	7.7
8	1	1	1	83.7	10.9
9	-1.682	0	0	71.5	13.7
10	1.682	0	0	84.6	8.0
11	0	-1.682	0	70.8	14.6
12	0	1.682	0	81.3	9.8
13	0	0	-1.682	71.2	14.3
14	0	0	1.682	78.5	14.8
15	0	0	0	90.6	4.3
16	0	0	0	91.3	5.9
17	0	0	0	91.5	1.5
18	0	0	0	93.3	4.8
19	0	0	0	92.3	3.5
20	0	0	0	82.5	7.3
21	0	0	0	95.1	2.3
22	0	0	0	89.7	6.6
23	0	0	0	93.1	1.8

Table 6 Table of variance analysis

来源 Sources	Y₁		Y₂
来源 Sources	F	P	F	P
模型Model	22.193 27	<0.000 1	11.943 95	<0.000 1
D₁	12.241 75	0.003 9	4.494 047	0.046 9
D₂	20.137 84	0.000 6	7.014 978	0.020 1
D₃	10.718 27	0.006 0	2.898 229	0.112 5
D₁D₂	1.515 662	0.240 1	0.412 58	0.531 8
D₁D₃	5.563 427	0.034 7	10.314 49	0.006 8
D₂D₃	1.515 662	0.240 1	0.961 162	0.344 8
$D 12$	39.085 18	<0.000 1	16.050 8	0.001 5
$D 22$	51.395 87	<0.000 1	24.166 66	0.000 3
$D 32$	59.590 03	<0.000 1	42.241 73	<0.000 1
失拟项	0.313 803	0.891 3	0.943 585	0.502 4
Lack of fit

Table 6 Table of variance analysis

来源 Sources	Y₁		Y₂
来源 Sources	F	P	F	P
模型Model	22.193 27	<0.000 1	11.943 95	<0.000 1
D₁	12.241 75	0.003 9	4.494 047	0.046 9
D₂	20.137 84	0.000 6	7.014 978	0.020 1
D₃	10.718 27	0.006 0	2.898 229	0.112 5
D₁D₂	1.515 662	0.240 1	0.412 58	0.531 8
D₁D₃	5.563 427	0.034 7	10.314 49	0.006 8
D₂D₃	1.515 662	0.240 1	0.961 162	0.344 8
$D 12$	39.085 18	<0.000 1	16.050 8	0.001 5
$D 22$	51.395 87	<0.000 1	24.166 66	0.000 3
$D 32$	59.590 03	<0.000 1	42.241 73	<0.000 1
失拟项	0.313 803	0.891 3	0.943 585	0.502 4
Lack of fit

Fig.14 Response surface of factors affecting the qualified rate of planting space

Table 7 Results of tests

序号 No.	D₁/ (km·h^-1)	D₂/ (r·min^-1)	Y₁/%	Y₂/%
1	1.0	25	89.3	4.9
2	1.0	25	91.6	3.8
3	1.0	25	91.2	3.6
4	1.0	25	90.1	4.5
5	1.0	25	90.8	4.2

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Parameter optimization experiment of seedling guiding tube transplanting machine of Panax notoginseng seedling

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