| 摘要 |
PROBLEM TO BE SOLVED: To measure a tension of a wire by generating stably a characteristic frequency by impact corresponding to the outer diameter of the wire, and to mount a device surely without damaging the wire. SOLUTION: This tension measuring device 1 is constituted of: a pair of fixed members 2 fixed on both ends between a prescribed span S on an overhead wire T; a connection member 3 for connecting each fixed member 2; an impact member 4 pivoted on the connection member 3, rotatably on a vertical surface; a vibration sensor 5 for sensing vibration of the overhead wire T generated between the span S by impact; and a processing device 6 for calculating a tension between the span S, after calculating the characteristic frequency by receiving a signal from the vibration sensor 5. A bending recessed part for receiving the overhead wire T is provided on a wire gripping part of the fixed members 2. The vibration sensor 5 is fixed on the overhead wire T through a load adjusting member 18. The load adjusting member 18 to be used has a mass selected corresponding to the overhead wire T, in order to generate the characteristic frequency stably by lowering a frequency band of vibration by impact on the overhead wire T. COPYRIGHT: (C)2011,JPO&INPIT |
