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农机装备早期故障消除模型 预览

Model of Eliminating Early Failures for Agricultural Equipment
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摘要 可靠性是现代农机装备市场竞争力的一个重要因素。为了消除农机装备的早期故障,提高其可靠性水平,提出了一种农机装备早期故障通用消除模型。首先,采用双重Weibull分段模型对农机装备浴盆曲线建立定量化模型,明确早期故障期与偶然故障期的分界点;然后,研究了早期故障的形成与消除机理,在此基础上建立起农机装备早期故障消除模型,并详述了可靠性设计分析层、可靠性试验层、早期故障消除层的具体内容和实施方法;最后,以小型联合收割机为例证明了该模型的适用性与有效性。 Reliability is an important factor in market competitiveness of the agricultural equipment. To eliminate the early failures and improve the reliability of agricultural equipment, the general model of eliminating early failures for agricultural equipment is proposed in this paper. Firstly, Weibull two-fold mixture model is chose to establish the bathtub curve model of agricultural equipment, and division between early failure phase and normal operation phase is identified. Secondly, the formation of early failures and mechanism of early failures elimination are studied, and a model of eliminating early failures for agricultural equipment is established, with some detailed process and implementation of reliability analysis layer, reliability test layer and early failures elimination layer. Finally, an example of small-scale combine harvester is shown to illustrate the applicability and validity of the model.
作者 柳剑 岳高峰 叶进 曾百功 魏枭 Liu Jian;Yue Gaofeng;Ye Jin;Zeng Baigong;Wei Xiao(College of Engineering and Technology, Southwest University, Chongqing 400715, China;Chongqing Testing Center of Agro-machinery, Chongqing 402160, China)
出处 《农机化研究》 北大核心 2019年第4期24-29,36共7页 Journal of Agricultural Mechanization Research
基金 国家自然科学基金项目(31601210) 中央高校基本科研业务费专项(SWU114038, XDJK2015B008) 重庆市农发资金项目(2017).
关键词 农机装备 早期故障 浴盆曲线 可靠性分析 可靠性试验 agricultural equipment early failures bathtub curve reliability analysis reliability test
作者简介 柳剑(1985-),男,重庆人,讲师,博士,(E-mail) swordsheer@swu.edu.cn.
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