甘薯联合收获机二级输送分离装置的设计与试验

doi:10.13229/j.cnki.jdxbgxb.20221454

Abstract

Abstract:

For sweet potato two-stage combine harvester operation， the secondary conveyor separator device injures potato seriously， and the effect of soil and sweet potato separation is poor. A high and low interval secondary conveyor separator device was designed. By means of structural parameters and kinematic analysis， the key factors of the operational effect of the secondary conveyor separator were derived. At the same time， the value range of each influencing factor was determined. Based on a quadratic orthogonal rotation combination test， the value of the best factors for the test index was drawn. The field harvest test shows that the potato injury rate is 0.797%， and the soil removal rate is 74.839%，in the case of the speed of high and low interval secondary conveyor separator device is 0.6 m/s， the vibration amplitude is 26.2 mm， and the vibration frequency is 6.6 Hz. The results of the study can provide a reference for the structure improvement and operation parameters optimization of the two-stage sweet potato combine harvester.

Key words: agricultural engineering, sweet potato combine harvester, conveyor separator device, kinematic analysis, high and low interval type

CLC Number:

S225.7

Ran-bing YANG,Jian ZHANG,Shu-qi SHANG,Guang-bo TIAN,Yu-ming ZHAI,Zhi-guo PAN. Design and test of secondary conveyor separator device for sweet potato combine harvester[J].Journal of Jilin University(Engineering and Technology Edition), 2024, 54(9): 2708-2722.

Figures/Tables 22

Fig.1

Fig.2

Fig.3

Table 1

Fig.4

Fig.5

Fig.6

Fig.7

Fig.8

Fig.9

Fig.10

Fig.11

Fig.12

Fig.13

Fig.14

Fig.15

Fig.16

Table 2

Table 3

Table 4

Variance analysis of regression equation"

来源	伤薯率Y₁					去土率Y₂
来源	平方和	自由度	均方	F值	P值	平方和	自由度	均方	F值	P值
模型	0.266 4	9	0.029 6	34.71	<0.000 1^**	83.86	9	9.32	26.56	< 0.000 1^**
X₁	0.205 7	1	0.205 7	241.15	<0.000 1^**	55.77	1	55.77	159.01	< 0.000 1^**
X₂	0.043 3	1	0.043 3	50.79	<0.000 1^**	21.34	1	21.34	60.85	< 0.000 1^**
X₃	0.007 6	1	0.007 6	8.89	0.010 6^*	2.30	1	2.30	6.55	0.023 8^*
X₁X₂	0.006 1	1	0.006 1	7.09	0.019 5^*	0.159 6	1	0.159 6	0.455 1	0.511 8
X₁X₃	0.000 2	1	0.000 2	0.234 5	0.636 3	1.91	1	1.91	5.45	0.036 3^*
X₂X₃	0.000 2	1	0.000 2	0.234 5	0.636 3	1.67	1	1.67	4.75	0.048 3^*
X $12$	0.000 7	1	0.000 7	0.854 9	0.372 0	0.242 8	1	0.242 8	0.692 2	0.420 4
X $22$	0.002 3	1	0.002 3	2.72	0.123 2	0.036 0	1	0.036 0	0.102 6	0.753 8
X $32$	0.000 4	1	0.000 4	0.466 9	0.506 4	0.438 1	1	0.438 1	1.25	0.284 0
残差	0.011 1	13	0.000 9	-	-	4.56	13	0.350 8	-	-
失拟项	0.003 7	5	0.000 7	0.797 1	0.581 1	1.06	5	0.211 6	0.483 5	0.780 2
误差	0.007 4	8	0.000 9	-	-	3.50	8	0.437 7	-	-
总和	0.277 5	22	-	-	-	88.42	22	-	-	-

Table 4

Fig.17

Table 5

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参数	数值
尺寸（长×宽×高）/（mm × mm × mm）	1 600×940×285
倾角/（°）	0
输送链速度可调范围/（m·s^-1）	0~1.2
抖动器振动幅度/mm	0~26.2
抖动器振动频率可调范围/Hz	0~7.5
杆条直径/mm	11
杆条水平间距/mm	45
杆条竖直间距/mm	38

水平	试验因素
水平	振动幅度 X₁/mm	振动频率 X₂/Hz	线速度 X₃/（m·s^-1）
1.682	40.00	7.00	0.80
1	35.95	6.57	0.72
0	30.00	5.95	0.60
-1	24.05	5.33	0.48
-1.682	20.00	4.90	0.40

序号	试验因素			伤薯率 Y₁/%	去土率 Y₂/%
序号	X₁/mm	X₂/Hz	X₃/ （mm·s^-1）	伤薯率 Y₁/%	去土率 Y₂/%
1	30.00	4.90	0.60	0.75	73.07
2	30.00	5.95	0.60	0.84	74.00
3	30.00	5.95	0.80	0.87	76.43
4	30.00	5.95	0.60	0.80	74.41
5	30.00	5.95	0.60	0.76	75.97
6	20.00	5.95	0.60	0.62	72.10
7	30.00	5.95	0.60	0.83	75.72
8	30.00	5.95	0.60	0.78	74.89
9	30.00	7.00	0.60	0.91	77.65
10	30.00	5.95	0.40	0.75	74.96
11	35.95	6.57	0.72	1.06	77.70
12	35.95	5.33	0.72	0.89	76.43
13	35.95	5.33	0.48	0.86	75.27
14	30.00	5.95	0.60	0.80	75.26
15	24.05	5.33	0.48	0.65	71.04
16	35.95	6.57	0.48	1.05	79.25
17	24.05	5.33	0.72	0.70	73.27
18	30.00	5.95	0.60	0.85	74.40
19	30.00	5.95	0.60	0.78	74.79
20	40.00	5.95	0.60	1.01	79.05
21	30.00	5.95	0.60	0.82	75.46
22	24.05	6.57	0.72	0.76	74.86
23	24.05	6.57	0.48	0.73	73.57

项目	直杆条二级输送分离装置实测值		高低间隔式二级输送分离装置实测值
项目	伤薯率%	去土率%	伤薯率%	去土率%
平均值	1.093	71.537	0.797	74.839
1	1.12	72.08	0.86	75.43
2	1.11	70.10	0.78	74.41
3	1.01	72.30	0.76	74.78
4	1.20	70.95	0.88	74.82
5	1.01	71.32	0.83	74.47
6	1.03	72.39	0.81	74.34
7	1.05	72.85	0.73	75.44
8	1.08	71.14	0.72	75.10
9	1.14	70.56	0.81	75.33
10	1.18	71.68	0.79	74.27

Design and test of secondary conveyor separator device for sweet potato combine harvester

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