In industrial contexts, the stratification of materials by size is a common requirement, particularly in sectors such as food production, construction, and mineral extraction. Vibrating screens, which have been in use for over a century, play a crucial role in this process by applying forced vibration to classify materials according to particle size. In mineral processing facilities, these screens are essential, operating under demanding conditions and heavy loads. This paper focuses on vibrating screens used for the particle size separation of iron ore and quarry rocks. Given these operational challenges, this equipment is prone to various structural and mechanical failures, including cracks, bearing malfunctions, and universal joint issues. This study, a collaborative effort between a machinery manufacturer and mining companies, identifies the main causes of failures in vibrating screens, highlighting deficiencies in design and manufacturing processes as well as lapses in operational and maintenance practices. Recognizing the significant impact that a vibrating screen’s maintenance shutdown can have on an entire mineral processing facility, the paper emphasizes failure prevention and aims to contribute to improved maintenance practices in industries, with the goal of enhancing operational efficiency and reducing losses.

中文翻译：

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振动筛故障的原因：文献综述


在工业环境中，按尺寸对材料进行分层是一项常见要求，尤其是在食品生产、建筑和矿物开采等行业。振动筛已经使用了一百多年，通过施加强制振动根据颗粒大小对材料进行分类，在此过程中发挥着至关重要的作用。在矿物加工设施中，这些筛分机在苛刻的条件和重负载下运行是必不可少的。本文重点介绍用于铁矿石和采石场岩石粒度分离的振动筛。鉴于这些操作挑战，该设备容易出现各种结构和机械故障，包括裂纹、轴承故障和万向节问题。这项研究是机械制造商和采矿公司之间的合作成果，确定了振动筛故障的主要原因，突出了设计和制造过程的缺陷以及操作和维护实践的失误。认识到振动筛的维护停机可能对整个矿物加工设施产生重大影响，本文强调故障预防，旨在为改进工业维护实践做出贡献，以提高运营效率和减少损失。