Abstract: A security box for securing access to shipping containers and tractor trailers is provided. The security box comprises two halves that are attached by a hinge and that can be closed together. When the security box is in the closed position, it has the general shape of a closed box with openings at the sides. The openings are sized so as to accommodate a handle which rotates a lockrod assembly securing a container door. The security box can be locked by rotating a shaft protruding from within the box and then engaging an electromechanical lock. Rotation of the shaft rotates a flange attached to the end of the shaft so that it rotates behind two fixed flanges which block the rotatable flange from moving outward, and hence the box from opening. In this way, the handle is secured within the box and prevented from being rotated away from the container door, which in turn prevents the lockrod assembly from being rotated and the container door from being opened.

Abstract: A security box for securing access to shipping containers and tractor trailers is provided. The security box comprises two halves that are attached by a hinge and that can be closed together. When the security box is in the closed position, it has the general shape of a closed box with openings at the sides. The openings are sized so as to accommodate a handle which rotates a lockrod assembly securing a container door. The security box can be locked by rotating a shaft protruding from within the box and then engaging an electromechanical lock. Rotation of the shaft rotates a flange attached to the end of the shaft so that it rotates behind two fixed flanges which block the rotatable flange from moving outward, and hence the box from opening. In this way, the handle is secured within the box and prevented from being rotated away from the container door, which in turn prevents the lockrod assembly from being rotated and the container door from being opened.