RESEARCH ON VIBRATION CHARACTERISTICS OF LONGITUDINAL ROADHEADER

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Journal of Vibration and Shock ›› 2013, Vol. 32 ›› Issue (11) : 17-20.

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RESEARCH ON VIBRATION CHARACTERISTICS OF LONGITUDINAL ROADHEADER

ZHAO Li-juan TIAN ZHEN SUN YING ZHOU Zhen-hua

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Abstract

In order to investigate vibration characteristics of roadheader, through the analysis of the vibration source of roadheader found that the nonlinear instantaneous impact loading caused by cutting pick in the cutting process is the main disturbance source of the vibration,The load model of cutting pick was founded, the simulation programme of cutting pick momentary load was worked out by the implementation of MATLAB,the momentary load files of cutting pick were created and leaded successfully in the rigid-flex coupled vibration model of roadheader which was established based on a co-simulation virtual prototype frame. Distinguished the modal parameter and the easily aroused modal shape of the ranging arm according to the vibration analysis;The frequency which determined the overall performance of the system were confirmed; Identified the weak links through rotating table harmonic response analysis.The results provide foundations for the vibration analysis of Roadheader and enhancing its capability of upholding shock.

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roadheader / rigid-flex coupled / vibration / rotating table / harmonic response

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ZHAO Li-juan TIAN ZHEN SUN YING ZHOU Zhen-hua. RESEARCH ON VIBRATION CHARACTERISTICS OF LONGITUDINAL ROADHEADER[J]. Journal of Vibration and Shock, 2013, 32(11): 17-20