Outer lead curtain adjusting structure of security inspection machine

The utility model relates to the related technical field of security inspection machines, in particular to an outer lead curtain adjusting structure of a security inspection machine, which comprises a lead curtain, a rectangular strip and an adjusting structure, a cavity with an upper opening and a lower opening is arranged in the rectangular strip, a worm is inserted in the cavity, the worm is inserted in the middle of the rectangular strip, a worm wheel is arranged in the middle of the worm, and the adjusting structure is arranged in the middle of the worm. Rectangular blocks are arranged at the two ends of the worm, the worm is in threaded connection with the rectangular blocks, the worm drives the rectangular blocks on the two sides to move towards the two sides, so that the threaded rods on the two sides extend out of the two sides of the rectangular strips to penetrate through the through holes of the mounting frame, and then nuts are mounted on the threaded rods and slowly abut against the two side end