TBM施工中遇到问题的分析及对策

TBM结构庞大且复杂,作业环境恶劣,施工中难免会遇到各种问题。分析了主轴承润滑系统污染可能的途径、导致的后果及可采取的维护保养措施;介绍了刀圈偏磨、刀圈卷刃、挡圈断裂或脱落等刀具异常损坏的原因及对策;提出风机底座振动、风管破裂及漏风等隧道通风问题的解决方法;制定了加强线路以及车辆运行管理的运输方案。以上措施的应用促进了TBM施工综合速度的提高。     

低硫法令对船舶柴油机的影响及解决方案

在全球新一轮低硫法令的背景下,从燃油喷射、燃油不相容性以及排气阀等角度深入分析低硫燃油对船舶柴油机的影响.在此基础上,详细介绍瓦锡兰公司提出的针对燃油和滑油系统的双油柜系统解决方案以及柴油机安装TriboPack组件的建议.通过引用个案,说明双油柜系统解决方案较之其它低硫应对方案具有更佳的运营经济性,值得进一步推广.     

船舶推进轴的推力轴承特性分析

Thrust bearing is a key component of the propulsion system of a ship. It transfers the propulsive forces from the propeller to the ship’s hull, allowing the propeller to push the ship ahead. The performance of a thrust bearing pad is critical. When the thrust bearing becomes damaged, it can cause the ship to lose power and can also affect its operational safety. For this paper, the distribution of the pressure field of a thrust pad was calculated with numerical method, applying Reynolds equation. Thrust bearing properties for loads were analyzed, given variations in outlet thickness of the pad and variations between the load and the slope of the pad. It was noticed that the distribution of pressure was uneven. As a result, increases of both the outlet thickness and the slope coefficient of the pad were able to improve load bearing capability.     

门机集中润滑监控系统的设计和应用

为实时监控门机各铰点轴承润滑状况,设计了门机集中润滑监控系统。分析了原润滑系统存在的问题。介绍了门机新的集中润滑监控系统的研究和方案设计。方案实施后取得很好的经济效益。该监控系统提高了安全性,降低了故障率,可在门机、装卸桥等大型设备上推广使用。     

高速铁路小半径曲线轮轨减磨技术研究

针对我国高速铁路小半径曲线钢轨及车轮轮缘磨耗突出的问题,采用轮轨固体润滑技术,在广珠城际铁路进行轮轨减磨试验.通过对钢轨和车轮廓形变化的长期跟踪,研究固体润滑前后轮轨磨耗速率变化,得出主要结论:(1)更换在线热处理钢轨后,小半径曲线上股钢轨寿命可延长1倍以上;(2)固体润滑对钢轨减磨效果显著,润滑试验期间,试验曲线上行...