CONTACT POSITION MEASURING DEVICE AND CONTACT POSITION MEASURING METHOD

To provide a contact position measuring device and the like that can measure contact positions between wheels and rails with a simple configuration.SOLUTION: A contact position measuring device for measuring a contact position of a wheel 100 of a railroad vehicle with a rail in a direction of sleepers includes: a plurality of strain gauges 1A to 7B for contact position measurement that are arranged distributed in a circumferential direction of a wheel and detect elastic deformation of the wheel and form bridge circuits Qs1 and Qs2 for contact position measurement whose frequency characteristics of an output waveform during wheel rotation change according to the contact position; and a contact position calculation unit that calculates the contact position based on the frequency characteristics of the output waveform of the bridge circuits for contact position measurement during wheel rotation.SELECTED DRAWING: Figure 1 【課題】簡単な構成により車輪とレールとの接触位置を測定可能な接触位置測定装置等を提供する。【解決手段】鉄道車両の車輪１００におけるレールとのまくらぎ方向における接触位置を測定する接触位置測定装置を、車輪の周方向に分散して配置され車輪の弾性変形を検出するとともに、接触位置に応じて車輪回転時の出力波形の周波数特性が変化する接触位置測定用ブリッジ回路Ｑｓ１，Ｑｓ２を構成する複数の接触位置測定用ひずみゲージ１Ａ乃至７Ｂと、車輪回転時における接触位置測定用ブリッジ回路の出力波形の周波数特性に基づいて接触位置を演算する接触位置演算部とを備える構成とする。【選択図】図１