PROBLEM TO BE SOLVED: To provide an X-ray imaging apparatus capable of downsizing, lightening a mechanism for moving the turning shaft of a turning arm and quickly and accurately, and moving the turning shaft of the turning arm further.SOLUTION: An X-ray imaging apparatus includes: an X-ray irradiation part 8 for irradiating a subject with X-rays an X-ray detection part 9 for detecting the X-rays transmitted through the subject a turning arm 6 where the X-ray irradiation part 8 and the X-ray detection part 9 are arranged while facing each other a uniaxial linear movement mechanism for uniaxially and linearly moving a table in a direction perpendicular to the normal line of the table and a crank member. The crank member includes a connection part, an upper shaft projected upwards from the connection part, and a lower shaft projected downwards from the connection part and shifted from the upper shaft. An upper bearing part for pivotally supporting the upper shaft is fixed to the table, and the axial direction of the upper shaft and the normal line direction of the table coincide with each other. A lower bearing part for pivotally supporting the lower shaft is fixed to the turning arm 6, and the lower shaft becomes the turning shaft of the turning arm 6.COPYRIGHT: (C)2014,JPO&INPIT【課題】旋回アームの旋回軸を移動させる機構を小型化、軽量化でき、さらに旋回アームの旋回軸の移動を迅速かつ正確に行うことができるX線撮影装置を提供する。【解決手段】本発明に係るX線撮影装置は、被写体に対してX線を照射するX線照射部8と、前記被写体を透過したX線を検出するX線検出部9と、X線照射部8及びX線検出部9を対向して配置する旋回アーム6と、テーブルを前記テーブルの法線に垂直な方向に1軸直動する1軸直動機構と、クランク部材とを備える。前記クランク部材が、連結部と、前記連結部から上方に突出する上部軸と、前記連結部から下方に突出し前記上部軸とずれている下部軸とを有する。前記上部軸を軸支する上部軸受部が前記テーブルに固定され、前記上部軸の軸方向と前記テーブルの法線方向とが一致する。前記下部軸を軸支する下部軸受部が旋回アーム6に固定され、前記下部軸が旋回アーム6の旋回軸となる。【選択図】図1
