Radiographic inspection device and method of inspecting object

A radiographic inspection device, comprising:

• a support frame, wherein an inspection space applicable to inspect an object is formed within the support frame, and the inspection space has an opening connecting to an outside;
• a transfer mechanism applicable to carry the object to move through the inspection space;
• a shielding curtain mounted at the opening;
• and
• a driving mechanism mounted on the support frame and configured to drive the shielding curtain to move, in response to the object getting close to or moving away from the opening, so as to open or close the opening,
• wherein the driving mechanism comprises:
• a driver mounted on the support frame;
• and
• a transmission mechanism, wherein the driver drives the shielding curtain to rise or fall through the transmission mechanism,
• wherein the driver comprises a motor,
• the transmission mechanism comprises:
• a driven shaft mounted on an upper part of the support frame and driven to rotate by the motor;
• two first rollers respectively mounted near two ends of the driven shaft and configured to rotate with the driven shaft:
• two second rollers respectively mounted on two opposite upright frames of the support frame, and respectively located below the two first rollers;
• two conveyor belts each wrapped around one of the two first rollers and one of the two second rollers;
• and
• a joint portion, wherein two ends of the joint portion are respectively connected to the two conveyor belts, and the shielding curtain is connected to the joint portion, so that the shielding curtain is driven to move up and down with the conveyor belt.