| 摘要 |
PROBLEM TO BE SOLVED: To lengthen a life of an X-ray tube device by preventing abrasion of an anodic rotating shaft due to gyro effect in an X-ray imaging apparatus.SOLUTION: Even after rotary drive of an anode is stopped after X-ray irradiation, the anode rotates in its inertia. When anode rotational frequency due to its inertia is lower than a preset value, a brake release is allowed. Thus, an operator cannot move an X-ray tube device because a brake is not released even by pressing a brake release switch when the rotational frequency due to the inertia of an anode is equal to or more than the preset value. Therefore, the Coriolis force applied to the anode to be worn away due to pressing to a rotary bearing can be prevented. |
