Reliability Sensitivity Analysis and Optimization Design on Tractive Drive System of Shearer Loader

doi:10.12068/j.issn.1005-3026.2017.01.017

Abstract

Abstract: Traction unit is an important dynamic transmission system of a shearer loader. Considering the nonlinear backlash and time-varying mesh stiffness， the dynamic model was established for the tractive transmission system of MG300/700-WD shearer loader. Based on the high-order stochastic response method， an explicit relationship between the parameters of traction unit and the maximum contact stress was built. Indexes of reliability sensitivity were calculated to analyze the system performance. The maximal reliability model and minimal space model were proposed to optimize the traction unit in shearer loader. The research results show that the second planetary gear system has a great effect on the reliability of traction unit and the parameters of sun gear are more sensitive than those of planet gear. The optimization models can elevate the system reliability and can decrease the indexes of reliability sensitivity in the area of high structural strength.

Key words: reliability sensitivity, high-order stochastic response surface method, reliability, optimization design, traction unit

CLC Number:

TD421

ZHOU Di， ZHANG Xu-fang， ZHANG Yi-min. Reliability Sensitivity Analysis and Optimization Design on Tractive Drive System of Shearer Loader[J]. Journal of Northeastern University Natural Science, 2017, 38(1): 81-85.

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