Journal of Northeastern University Natural Science ›› 2015, Vol. 36 ›› Issue (4): 546-550.DOI: 10.12068/j.issn.1005-3026.2015.04.020

• Mechanical Engineering • Previous Articles     Next Articles

Natural Characteristics and Sensitivity of TBM Cutterhead System with Multi-degree-of-freedom Coupling

LING Jing-xiu1, SUN Wei1, HUO Jun-zhou1, DENG Li-ying2   

  1. 1.School of Mechanical Engineering, Dalian University of Technology, Dalian 116024, China; 2. Northern Heavy Industry Group Co., Ltd. Shenyang 110141, China.
  • Received:2013-11-08 Revised:2013-11-08 Online:2015-04-15 Published:2014-11-07
  • Contact: HUO Jun-zhou
  • About author:-
  • Supported by:
    -

Abstract: A multi-degree-of-freedom coupling dynamic model with translation-rotation-bending directions of a TBM cutterhead system was established with considering time-varying meshing stiffness, bearing stiffness, transmission errors and damping, etc. Based on parameters of an actual project, the natural frequencies and corresponding vibration modes were calculated. The influence of natural frequencies and sensitivities with respect to system parameters were investigated. The results showed that the low natural frequencies are 57 and 61Hz, respectively. The natural vibration modes are pinions-motors rotational mode and translational-overturning coupled mode of cutterhead with inner ring gear correspondingly. Meanwhile, the sensitive range of tangential stiffness about cutterhead pieces is 3~4GN/m and the mass sensitive range is 19~23t, respectively.

Key words: cutterhead system, multi-degree-of-freedom coupling, natural characteristics, sensitivity, parameter influence

CLC Number: