Radiation inspection system

A radiation inspection system, comprising:

• a radiation imaging device, which comprises at least one radiation source and at least one detector module, has a CT inspection mode and a DR inspection mode, and is configured to perform radiation inspection on an object to be inspected passing through an inspection channel;
• a conveying device, which comprises a conveying device main body, and a primary-secondary motor in drive connection with the conveying device main body to drive the conveying device main body to move along the inspection channel, the primary-secondary motor including a main motor, a sub-motor, and a speed reducer;
• and
• a controller in signal connection with the radiation imaging device and the primary-secondary motor, the controller being configured such that when the radiation imaging device is in the CT inspection mode, the conveying device main body is in drive connection with the sub-motor through the speed reducer to convey the object to be inspected under the drive of the sub-motor, and in the DR inspection mode, the conveying device main body is in drive connection with the main motor to convey the object to be inspected under the drive of the main motor, wherein a conveying speed when the conveying device main body is in drive connection with the main motor is higher than a conveying speed when the conveying device main body is in drive connection with the sub-motor;
• wherein the primary-secondary motor further comprises a first connecting part and a second connecting part, wherein the first connecting part and the second connecting part each comprises two transmission parts having an axially connected state and an axially separated state, respectively;
• the speed reducer has an input shaft and an output shaft;
• the main motor is connected to the output shaft via the first connecting part;
• the sub-motor is connected to the input shaft via the second connecting part;
• and the primary-secondary motor is in drive connection with the conveying device main body by means of the main motor.