丘陵山地胡麻联合收割机作业参数优化与试验

doi:10.13229/j.cnki.jdxbgxb20210377

Abstract

Abstract:

In order to improve the working efficiency of the flax combine harvester in hilly areas， this study took the forward speed of the working machine， the rotating speed of threshing drum and the rotating speed of impurity suction fan as independent variables， and the threshing rate， the total loss rate and the impurity content rate of grains as response values. According to the Box-Behnken experimental design principle， the mathematical models between each factor and the response values were established by using the response surface analysis method of three factors and three levels， and the interaction of each factor was analyzed. The results showed that the order of impact of the threshing rate was the speed of the threshing cylinder， advanced machine， and centrifugal fan. The order of effects of the total loss rate was the speed of the developed device， centrifugal fan， and threshing cylinder， and the order of impact on the impurity rate was the speed of the centrifugal fan threshing cylinder and advanced machine. The optimal working parameters of the device were as follows： the advance speed of 0.65 m/s， the threshing cylinder speed of 830.3 r/min， and the centrifugal fan speed of 1154.39 r/min. The validation test showed that the average threshing rate was 96.33%， the total loss rate was 1.87%， and the impurity rate was 3.24%. The results show that the total loss and seed impurity rate of hilly area flax combine harvester could be reduced under the operation parameters， which could provide a specific reference for the design and experiment of hilly area flax combine harvester.

Key words: agricultural machinery, combine harvester, flax, hilly area, parameter optimization

CLC Number:

S225.31

Rui-jie SHI,Fei DAI,Wu-yun ZHAO,Xiao-long LIU,Jiang-fei QU,Feng-wei ZHANG. Optimization and experiment of operation parameters of hilly area flax combine harvester[J].Journal of Jilin University(Engineering and Technology Edition), 2022, 52(11): 2746-2755.

Figures/Tables 13

Fig.1

Table 1

Fig.2

Fig.3

Fig.4

Fig.5

Table 2

Table 3

Table 4

Variance analysis of regression equation"

试验指标	变异来源	平方和	自由度	均方	F	P
脱净率	模型	303.03	9	33.67	187.91	<0.0001**
	X₁	13.01	1	13.01	72.58	<0.0001**
	X₂	226.31	1	226.31	1263.06	<0.0001**
	X₃	4.95	1	4.95	27.6	0.0012**
	X₁X₂	0.02	1	0.02	0.11	0.7505
	X₁X₃	11.02	1	11.02	61.52	0.0001**
	X₂X₃	1.5	1	1.5	8.38	0.0232*
	X $12$	2.64	1	2.64	14.73	0.0064*
	X $22$	35.15	1	35.15	196.17	<0.0001**
	X $32$	5.18	1	5.18	28.91	0.0010*
	残差	1.25	7	0.18
	失拟	0.66	3	0.22	1.49	0.3440
	误差	0.59	4	0.15
	总和	304.28	16
总损失率	模型	87.71	9	9.75	132.69	<0.0001**
	X₁	58.16	1	58.16	791.84	<0.0001**
	X₂	1.17	1	1.17	15.94	0.0052**
	X₃	20.51	1	20.51	279.28	<0.0001**
	X₁X₂	4.2×10^-3	1	4.2×10^-4	0.058	0.8173
	X₁X₃	0.14	1	0.14	1.97	0.2036
	X₂X₃	0.53	1	0.53	7.16	0.0318*
	X $12$	0.59	1	0.59	8.06	0.0251*
	X $22$	1.24	1	1.24	16.87	0.0045**
	X $32$	5.33	1	5.33	72.56	<0.0001**
	残差	0.51	7	0.073
	失拟	0.23	3	0.075	1.05	0.4632
	误差	0.29	4	0.072
	总和	88.22	16
籽粒含杂率	模型	64.21	9	7.13	1099.41	<0.0001**
	X₁	0.64	1	0.64	98.39	<0.0001**
	X₂	11.21	1	11.21	1727.48	<0.0001**
	X₃	47.78	1	47.78	7362.18	<0.0001**
	X₁X₂	7.2×10^-3	1	7.2×10^-3	1.11	0.3264
	X₁X₃	2.2×10^-4	1	2.2×10^-4	0.035	0.8576
	X₂X₃	6.4×10^-4	1	6.4×10^-4	0.99	0.3575
	X $12$	0.042	1	0.042	6.49	0.0383*
	X $22$	0.08	1	0.08	12.27	0.0100*
	X $32$	4.53	1	4.53	698.42	<0.0001**
	残差	0.045	7	6.4×10^-3
	失拟	0.031	3	0.01	2.76	0.1759
	误差	0.015	4	3.7×10^-3
	总和	64.25	16

Table 4

Fig.6

Fig.7

Fig.8

Table 5

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参数	值
整机尺寸（长×宽×高）/mm×mm×mm	3100×1450×1500
喂入量/（kg?s^-1）	0.9
作业速度/（m?s^-1）	0.4~0.7
额定功率/kW	13.4
额定转速/（r?min^-1）	3600
输送链扒类型	链耙式
滚筒参数（外径×长度）/（mm×mm）	430×950
履带节距×节数×宽/（mm×节×mm）	79×34×330
履带轨距/mm	700
割台幅宽/mm	1000
离地间隙/mm	≥235
生产率/（hm²?h^-1）	0.07~0.10

编码	因素
编码	前进速度x₁/（m·s^-1）	脱粒滚筒转速x₂/（r·min^-1）	吸杂风机转速x₃/（r·min^-1）
-1	0.47	700	800
0	0.56	900	1100
1	0.66	1100	1400

试验号	X₁	X₂	X₃	Y₁/%	Y₂/%	Y₃/%
1	0	-1	1	87.46	6.88	3.79
2	1	0	-1	93.88	0.92	7.75
3	0	0	0	96.03	4.06	4.11
4	0	1	1	99.55	8.33	1.23
5	0	0	0	96.46	4.06	3.98
6	1	1	0	99.23	2.08	2.91
7	1	0	1	98.53	3.43	2.86
8	0	1	-1	96.51	4.09	6.21
9	-1	-1	0	86.74	6.55	4.65
10	0	-1	-1	86.87	4.09	8.61
11	0	0	0	96.92	4.06	4.09
12	-1	0	1	92.19	9.32	2.26
13	-1	2	-1	94.18	6.05	7.12
14	1	-1	0	88.68	1.34	5.25
15	0	0	0	96.98	4.66	4.01
16	-1	1	0	97.01	7.42	2.48
17	0	0	0	96.59	4.06	4.11

试验指标	标准值	试验结果
脱净率/%	≥95	96.33
总损失率/%	≤5	1.87
籽粒含杂率/%	≤5	3.24

Optimization and experiment of operation parameters of hilly area flax combine harvester

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