轮式拖拉机对称结构的振动特性

doi:10.13229/j.cnki.jdxbgxb.20220313

Abstract

Abstract:

The vibration characteristics of the whole wheel tractor and the symmetrical parts of the structure were collected and analyzed by using the vibration test system， and the vibration similarity of the symmetrical structure was compared with the vibration intensity. The results show that the vibration characteristics of the symmetric parts of the front axle and the rear axle are symmetrical. The main vibration direction of the symmetric measurement points is the same， and the vibration similarity of the symmetric positions of the front axle and the rear axle is 93.91% and 94.29%， respectively. It is concluded that the vibration characteristics of the whole tractor and its symmetrical parts are affected by the working state of the whole tractor， the defects of parts and the assembly quality. The difference of the parts and assembly quality of the symmetrical parts of the tractor changes the vibration transmission path and affects the similarity of the vibration characteristics of the symmetrical parts. This paper presents a method for the comparison and evaluation of the vibration characteristics of the tractor symmetric structure， which can provide a fast-screening method for the on-line detection of tractor working state and the discovery of mechanical structure defects and faults.

Key words: agricultural mechanization engineering, tractor, vibration transmission, symmetrical structure

CLC Number:

S219.1

Mao-jian ZHANG,Jing-fu JIN,Yi-ying CHEN,Ting-kun CHEN. Vibration symmetry characteristics of wheeled tractor structure[J].Journal of Jilin University(Engineering and Technology Edition), 2023, 53(7): 2136-2142.

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测点	编号	振动烈度/（mm·s^-1）				主振动
		单向			空间	方向	占比/%
		x	y	z	空间	方向	占比/%
前桥左侧	1	1.00	2.07	1.00	2.51	y	82
	2	0.84	1.98	0.71	2.26	y	88
	3	0.91	2.13	1.15	2.59	y	82
前桥右侧	1	0.07	2.05	1.01	2.29	y	90
	2	0.62	2.07	0.94	2.36	y	88
	3	0.95	2.22	1.20	2.70	y	82
发动机左侧	1	2.06	0.06	3.07	3.70	z	83
	2	2.37	3.13	0.70	3.99	y	78
	3	0.45	10.03	1.75	10.19	y	98
发动机右侧	1	1.06	2.08	8.03	8.36	z	96
	2	2.04	3.89	1.00	4.50	y	86
	3	7.40	7.22	19.39	21.97	z	88
后桥左侧	1	0.09	0.08	0.98	0.99	z	99
	2	0.07	0.05	0.95	0.96	z	99
	3	0.08	0.07	1.01	1.02	z	99
后桥右侧	1	0.25	0.16	1.03	1.07	z	96
	2	0.12	0.15	1.02	1.04	z	98
	3	0.23	0.14	0.96	1.00	z	96

测点	编号	振动烈度/（mm.s^-1）				主振动
		单向			空间	方向	占比/%
		x	y	z	空间	方向	占比/%
前桥左侧	1	1.02	2.02	1.01	2.48	y	81
	2	1.10	1.84	0.76	2.27	y	81
	3	1.71	1.85	1.04	2.73	y	68
前桥右侧	1	0.85	1.92	1.18	2.41	y	80
	2	0.65	1.73	0.62	1.95	y	89
	3	1.89	1.95	1.36	3.04	y	64
发动机左侧	1	8.00	6.09	13.05	16.48	z	79
	2	3.30	2.54	7.35	8.45	z	87
	3	10.85	8.75	14.26	19.94	z	72
发动机右侧	1	5.04	8.04	16.01	18.61	z	86
	2	2.19	3.57	4.98	6.51	z	76
	3	4.21	5.25	9.36	11.53	z	81
后桥左侧	1	0.08	0.04	1.01	1.01	z	99
	2	0.25	0.44	0.67	0.84	z	80
	3	0.16	0.26	1.03	1.07	z	96
后桥右侧	1	0.06	0.05	1.01	1.01	z	99
	2	0.12	0.25	0.99	1.03	z	96
	3	0.13	0.09	1.19	1.20	z	99

测点	编号	振动烈度/（mm·s^-1）				主振动
		单向			空间	方向	占比/%
		x	y	z	空间	方向	占比/%
后桥左侧	1	0.15	0.26	0.96	1.01	z	95
	2	0.13	0.08	0.98	0.99	z	99
	3	0.17	0.13	0.95	0.97	z	98
后桥右侧	1	0.27	0.35	0.99	1.08	z	92
	2	0.08	0.19	1.02	1.04	z	98
	3	0.21	0.16	1.01	1.04	z	97

Vibration symmetry characteristics of wheeled tractor structure

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