Reliability Model of Shield Machine Cutter Drive Multi-stage Planetary Transmission System Considering Failure Relevance

Abstract

Abstract:

Multi-failure modes of each gear and multifactor relevance were existed in a planetary gear transmission. Based on the stress-strength interference theory, general reliability computation model for mechanical transmission system was presented under conditions of multi-failure modes and multifactor relevance, and applied to the reliability analysis for the multi-stage planetary transmission system used in shield machine cutter drive. Reliability models for each failure units like gears and bearings were established first. The reliability model of transmission system was obtained considering main failure modes and failure relevance of load and application factor, and Monte-Carlo method was used to simulate the result. The results demonstrate that the model can evaluate the reliability of shield machine cutter drive multi-stage planetary transmission system accurately. 

Key words: planetary gear transmission, stress-strength interference theory, reliability of system, multi-failure modes relevance

摘要：

考虑到行星齿轮传动系统中各齿轮存在多种模式的失效,且各失效模式间又存在着多种因素的相关性,根据应力-强度干涉理论,提出了在多失效模式及多因素相关条件下机械传动系统可靠性的一般计算模型。应用该模型对盾构机刀盘驱动多级行星传动系统进行了可靠性分析。首先建立了齿轮、轴承等各失效单元的可靠性模型,然后考虑系统中主要发生失效的模式及各失效模式间关于载荷和使用系数的相关性,建立了传动系统的可靠性模型,并用Monte-Carlo法对模型计算结果进行仿真验证,结果表明,该模型可以准确地评估盾构机刀盘驱动多级行星传动系统的可靠性。

关键词:

行星齿轮传动, 应力-强度干涉理论, 系统可靠性;多模式失效相关

CLC Number:



DIAO Yong, QIN Da-Tong, WU Wen-Hui. Reliability Model of Shield Machine Cutter Drive Multi-stage Planetary Transmission System Considering Failure Relevance[J]. China Mechanical Engineering, 2011, 22(5): 522-527.

赵勇, 秦大同, 武文辉.

考虑失效相关的盾构机刀盘驱动多级行星传动系统的可靠性模型

[J]. 中国机械工程, 2011, 22(5): 522-527.

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