| 摘要 |
A dolly (100) is configured so that the tilt angle (θ) of a rotating shaft (3) in the roll direction is detected by a tilt angle sensor (14). With this dolly (100), a motor (11) is driven so that the detected tilt angle (θ) is 0°, thereby rotating the rotating shaft (3) in the direction opposite the direction in which the rotating shaft (3) is tilted. As a result, the tilt of the rotating shaft (3) in the roll direction is compensated and the axial direction of the rotating shaft (3) in a front view is maintained oriented vertically upward. |
