摘要
针对钻机在一定转速下振动剧烈的问题,运用实验模态分析原理对ZJ70D钻机在工作状态下进行了振动测试。利用谱分析原理对环境激励下单纯利用响应信号参数识别的方法进行了研究。得出整个系统的频响函数曲线,并识别出前20阶模态频率。测试结果表明:转盘是引起钻机井架底座振动的主要原因,斜立柱是整个系统的薄弱环节,提出从转盘入手,增加转盘和方补心的同心度的方法缓解当前的振动问题。
According to testing modal analysis and spectrum analysis theories, the frequency response curves of ZJ70D drilling rig were obtained by means of dynamic testing in operational conditionals only using the ambient excitation's response, and the first 20 orders natural frequency were identified. The result of the testing indicated that the rotary was the major factor of causing the vibratory of rig derrick and substructure, and oblique upright were weak link of total system. Current vibration problem can be remitted by improving the concentricity of rotary and square -drive master bushing.
出处
《西南石油学院学报》
CSCD
北大核心
2005年第3期66-68,i006,共4页
Journal of Southwest Petroleum Institute
