Image forming apparatus

The utility model provides an imaging device which comprises a ray generating device which comprises a first mechanical arm and a ray source arranged on the first mechanical arm, the first mechanical arm comprises a first turnover structure, and the ray source is rotatably connected with the first turnover structure; the signal receiving device comprises a second mechanical arm and a detector arranged on the second mechanical arm, the second mechanical arm comprises a second overturning structure, and the detector is rotationally connected with the second overturning structure; each of the first mechanical arm and the second mechanical arm comprises a plurality of independent driving joints and a plurality of driving shafts rotationally connected with the independent driving joints, the first mechanical arm is in linkage fit with the second mechanical arm, and the radiation source and the detector are driven by the first turnover structure and the second turnover structure to turn over; therefore, the vertica