摘要
全断面岩石掘进机破岩作业过程中,刀盘的弹性变形是振动大、盘形滚刀破岩作业效能下降的主要原因之一。在分析刀盘结构的基础上,提出并建立了全断面岩石掘进机刀盘的弹性变形模型;考虑刀盘中心一般设置中心滚刀,从而将刀盘看成非连续弹性薄板,并以刀盘支撑为夹支及其边缘自由为边界条件,对刀盘弹性变形模型进行了求解。通过实例应用,发现了全断面岩石掘进机破岩作业过程刀盘弹性变形的不均匀性,从而提出了曲面刀盘的概念并提出此曲面刀盘可在刀盘设计、研制过程中实现,从而为增加刀盘刚度、降低全断面岩石掘进机破岩作业振动及提高盘形滚刀破岩作业效能的刀盘设计提供了借鉴。
During the rock-breaking operation of the full-face rock TBM （Tunnel Boring Machine）, the elastic deformation of the cutterhead is one of the main reasons of large vibration and decrease in rock-breaking efficiency of the disc cutter. After analyzing the structure of the cutterhead, the paper proposed and established the elastic deformation model of the cutterhead of the full-face rock TBM. Since the center of the cutterhead being usually set as the central cutter, the cutterhead was considered as discontinuous elastic thin plate. The cutterhead beating was rendered as clamps and the free edge served as the boundary condition, the elastic deformation model of the cutterhead was solved. Application example revealed the non-uniformiiy of the elastic deformation of the cutterhead during TBM operation, thereby the concept of bent cutterhead was proposed and its realization in design and development of the cutterhead was offered. It offered reference for reinforcement of the cutterhead stiffness, relief of vibration during TBM operation and enhancement of the rock-breaking efficiency of the disc cutter.
出处
《矿山机械》
2017年第1期7-11,共5页
Mining & Processing Equipment
基金
国家自然科学基金项目(51475163)
国家863项目(2012AA041803)
关键词
全断面岩石掘进机
曲面刀盘
弹性变形
刚度
作业效能
full-face rock TBM （Tunnel Boring Machine）
bent cutterhead
elastic deformation
stiffness
operation efficiency
