棉纺精梳机钳板摆轴的动力学分析

doi:10.13475/j.fzxb.20201102906

Abstract

Abstract:

In order to understand driving torque of the nipper pendulum shaft of the cotton spinning comber, the carding force, separate drafting force, inertia force of the nipper mechanism, inertia force of the nipper pendulum shaft were analyzed and their relationships with the driving torque of the nipper pendulum shaft was investigated. Mathematical models for the drag torque and the driving torque in the nipper pendulum shaft were established, and the ADAMS software was used to simulate the variation mechanisms of the drag torque and driving torque of the nipper pendulum shaft during a working cycle. The results show that the driving torque of the nipper pendulum is mainly determined by the torque of inertial force in the nipper mechanism for the nipper pendulum shaft. The peak and valley values of the driving torque curve of the nipper pendulum shaft are increased rapidly with the increase of comber speed, and the influence of the inertial force in the nipper mechanism on the driving torque of the nipper pendulum shaft becomes more significant. When the speed of the comber is increased from 300 to 500 nippers/min, the peak value of the driving torque curve is increased by 211%, and the ratio of the peak inertia torque of the nipper mechanism to the peak driving torque of the nipper pendulum shaft is increased from 63% to 74.1%.

Key words: comber, nipper pendulum shaft, nipper mechanism, carding force, dynamics

CLC Number:

TS112.2

LI Jinjian, REN Jiazhi, LIANG Zhuo, JIA Guoxin. Dynamic analyses on nipper pendulum shaft in cotton combers[J].Journal of Textile Research, 2021, 42(06): 160-165.

Figures/Tables 11

Fig.1

Fig.2

Fig.3

Fig.4

Fig.5

Fig.6

Fig.7

Tab.1

Fig.8

Tab.2

Characteristic parameters of total driving torque and drag torque of comber nipper pendulum shaft"

速度/ (钳次·min^-1)	力矩	谷值/ (N·m)	谷值/ 分度	峰值/ (N·m)	峰值/ 分度
300	$M 0$	-71.23	28.4	62.40	37
	$M 11$	0	24~35/5~24	6.96	38
	$M 21$	0	30~18	22.03	23.8
	$M 31$	-56.92	27.4	39.78	37
	$M 41$	-15.85	27.4	15.85	37
400	$M 0$	-118.18	28.4	119.25	37
	$M 11$	0	24~35/5~24	6.96	38
	$M 21$	0	30~18	22.03	23.8
	$M 31$	-91.92	27.4	84.36	37
	$M 41$	-28.17	27.4	28.17	37
500	$M 0$	-173.75	28.4	194.04	37
	$M 11$	0	24~35/5~24	6.96	38
	$M 21$	0	30~18	22.03	23.8
	$M 31$	-132.08	27.4	143.71	37
	$M 41$	-44.02	27.4	44.02	37

Tab.2

Tab.3

Ratio of peak torque of drag to peak torque of drive%"

速度/(钳次·min^-1)	$M 11 / M 0$	$M 21 / M 0$	$M 31 / M 0$	$M 41 / M 0$
300	11.2	35.3	63.8	25.4
400	5.8	18.5	70.8	23.6
500	3.6	11.4	74.1	22.7

Tab.3

References 12

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力矩	谷值/(N·m)	谷值/分度	峰值/(N·m)	峰值/分度
M₁	0	24~35/5~24	0.87	38
M₂	0	30~18	2.76	23.8
M₃	-7.12	27.4	4.97	37
M₄	-1.98	27.4	1.98	37
M	-8.9	28.4	7.80	37

Dynamic analyses on nipper pendulum shaft in cotton combers

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