摘要
胶筒式液压卡盘是全液压坑道钻机上的重要工作部件,其关键元件胶筒是卡盘中容易损坏的零件。选择Yeoh模型以便能更精确的描述卡盘胶筒本构关系,建立了胶筒的有限元模型,对其工作过程进行数值模拟,分析了工作时胶筒的应力应变情况及卡盘夹紧状态时胶筒的变形情况,找出了胶筒失效的根本原因,即卡盘与端压环之间存在间隙而导致胶筒与间隙发生啃噬。提出了增加尼龙垫圈以隔离胶筒和间隙的直接接触的改进方案,对提高钻机卡盘的工作可靠性,具有重要意义。
The rubber drum type hydraulic chuck is a important working part of the full hydraulic tunnel drilling rig. The key element of the rubber drum is an easy failure part in the chuck. Yeoh model was selected to accurately state the relationship of the rubber drum structure for the chuck and a finite element model of the rubber drum was established. The numerical simulation was conducted on the operation process. The stress and strain conditions of the drum during the working period and the deformation conditions of the rubber drum during the chuck in tension were analyzed. The basic causes of the rubber drum failure were found and the clearance between the chuck and the end pressure ring caused the biting between the rubber drum and clearance. An improvement plan with nylon cushion was provided to isolate the direct contact the rubber drum and clearance and would have important signifieances to improve the working reliability of the chuck for the drilling rig.
出处
《煤炭工程》
北大核心
2012年第7期115-117,共3页
Coal Engineering
关键词
钻机
卡盘胶筒
有限元
结构改进
drilling rig
rubber drum of chuck
finite element
structure improvement
