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1. 发明专利

JPS5745418A Detection of looseness of rotary machine 失效
标题翻译：检测旋转机器的松散度
公开(公告)号：JPS5745418A
公开(公告)日：1982-03-15
申请号：JP12104880
申请日：1980-09-03
申请人： Nippon Steel Corp , Nippon Yakin Kogyo Co Ltd
发明人： KUBOTA TETSUYA , HONDA NAKAMOTO , TOYODA TOSHIO , MAEKAWA KENJI , YAMADA NOBUO
IPC分类号： G01M99/00 , B21B13/20 , B21B33/00 , B21B38/00 , B21C51/00 , G01H17/00 , G01L5/00 , G01M13/04
CPC分类号： B21B38/008 , B21B13/20 , B21B33/00
摘要： PURPOSE:To quantiatively detect the state of loosenness of the rotating parts of rolling mills by detecting the change in the peak value of the sound pressure of ultrasonic sound by impact force. CONSTITUTION:When the rolls having loosened owing to the revolutions of a work roll contact with a rolling material, impact force is larger than that when normal rolls contact with the rolling material, and the ultrasonic sound by the impact force increases as well. The detected ultrasonic sound 7 is amplified in an amplifier 2 via a filtering circuit 1. The output signal of the amplifier 2 has a marker 8 detecting one revolution of a specific work roll as its input terminal. The peak value during one revolution of the specific work roll is detected by a peak value detecting circuit 3. An average value detecting circuit 4 detects the average value of the ultrasonic sounds produced during revolving of each work roll. A divider 5 divides the outputs signals of the circuit 3 and the circuit 4. A comparator 6 compares each input signal and a reference level and outputs an alarm when the set level is exceeded.
摘要翻译：目的：通过冲击力检测超声波声压峰值的变化，定量检测轧机旋转部件的松动状态。构成：当由于工作辊的转动而松动的辊与轧制材料接触时，冲击力大于普通辊与轧制材料接触的冲击力，并且冲击力的超声波也增加。检测到的超声波声音7通过滤波电路1在放大器2中被放大。放大器2的输出信号具有检测特定工作辊的一圈的标记8作为其输入端。通过峰值检测电路3检测特定工作辊一圈内的峰值。平均值检测电路4检测在每个工作辊的旋转期间产生的超声波的平均值。分频器5分割电路3和电路4的输出信号。比较器6比较每个输入信号和参考电平，并且当超过设定电平时输出报警。

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