Radiographic inspection device and method of inspecting object

A method of inspecting an object using a radiographic inspection device, wherein the radiographic inspection device comprises:

• a support frame, wherein an inspection space applicable to inspect an object is formed within the support frame, and the inspection space has an entrance and an exit which are connecting to an outside;
• a transfer channel applicable to carry the object to move through the inspection space;
• a first shielding curtain and a second shielding curtain respectively mounted at the entrance and the exit;
• and a driving mechanism mounted on the support frame and configured to drive at least one of the first shielding curtain and the second shielding curtain to move, in response to the object getting close to or moving away from at least one of the entrance and the exit, so as to open or close the at least one of the entrance or the exit, wherein the driving mechanism comprises a first driving mechanism and a second driving mechanism applicable to respectively drive the first shielding curtain and the second shielding curtain to rise or fall, wherein each of the first driving mechanism and the second 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, wherein the radiographic inspection device further comprises a limiting apparatus, the limiting apparatus is applicable to limit a range of movement of the joint portion in an upright direction, wherein the limiting apparatus comprises:
• a first proximity switch mounted on the support frame;
• and a matching switch mounted on the joint portion, wherein the driving mechanism stops driving the shielding curtain to rise in response to the matching switch being close to the first proximity switch;
• and wherein the limiting apparatus comprises:
• a second proximity switch mounted on the support frame, wherein the driving mechanism stops driving the shielding curtain to fall in response to the matching switch being close to the second proximity switch, and the method comprises:
• placing the object to be inspected on a transfer mechanism;
• driving, when the object to be inspected moves close to the entrance, the first shielding curtain to rise by the driving mechanism, so as to allow the object on the transmission mechanism to move into the inspection space;
• driving, when the object on the transmission mechanism moves in the support frame away from the first shielding curtain, the first shielding curtain to fall to an initial position by the driving mechanism;
• performing a radioactive inspection on the object moving within the inspection space;
• and
• driving, when the inspected object in the inspection space moves close to the exit, the second shielding curtain to rise by the driving mechanism, so as to allow the object to move outside the inspection space.

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 entrance and an exit which are connecting to an outside;
• a transfer channel applicable to carry the object to move through the inspection space;
• a first shielding curtain and a second shielding curtain respectively mounted at the entrance and the exit;
• and
• a driving mechanism mounted on the support frame and configured to drive at least one of the first shielding curtain and the second shielding curtain to move, in response to the object getting close to or moving away from at least one of the entrance and the exit, so as to open or close the at least one of the entrance or the exit,
• wherein the driving mechanism comprises a first driving mechanism and a second driving mechanism applicable to respectively drive the first shielding curtain and the second shielding curtain to rise or fall,
• wherein each of the first driving mechanism and the second 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 first roller mounted on an upper part of the support frame and driven to rotate by the motor;
• a second roller mounted on the support frame and located below the first roller;
• a conveyor belt wrapped around the first roller and the second roller;
• and
• a joint portion, wherein the shielding curtain is connected to the conveyor belt through the joint portion, so that the shielding curtain is driven to move up and down with the conveyor belt,
• wherein the transmission mechanism further comprises a limiting apparatus, wherein the limiting apparatus is applicable to limit a range of movement of the joint portion in an up and down direction,
• wherein the limiting apparatus comprises:
• a first proximity switch mounted on the support frame;
• and
• a matching switch mounted on the joint portion, wherein the driving mechanism stops driving the shielding curtain to rise in response to the matching switch being close to the first proximity switch;
• and
• a second proximity switch mounted on the support frame, wherein the driving mechanism stops driving the shielding curtain to fall in response to the matching switch being close to the second proximity switch.