Connecting mechanism for LED display screen box bodies

The invention discloses a connecting mechanism for LED display screen box bodies. The mechanism includes a mounting plate, a locating pin and a bolt, wherein the mounting plate is provided with a first through hole matched with the locating pin, and the locating pin is movably arranged in the axial direction of the first through hole; one end of the locating pin is connected to an LED display screen box body, and the other end is provided with a circular hole in a radial direction; the bolt comprises a first rod portion in an elliptic shape, and a long axis of the first rod portion section is not bigger than the diameter of the circular hole, moreover, the first rod portion is capable of moving in an axial direction of the circular hole inside the circular hole; the LED display screen box body and the bolt are positioned on both sides of the mounting plate respectively, and the mounting plate is provided with a fixed component to prohibit rotation of the bolt. By utilizing the rotation of the bolt to pull the