Fabricated bridge swivel support structure

The utility model provides an assembly type bridge swivel support structure which comprises an upper butt-joint plate, a connecting column is installed at the bottom of the upper butt-joint plate, and a lower butt-joint plate is installed at the bottom of the connecting column. A side strip is welded to one side of the upper butt-joint plate, a butt-joint strip is connected to the bottom of the side strip, a supporting strip is fixedly connected to the bottom of the butt-joint strip, the bottom of the supporting strip is connected to the upper surface of the lower butt-joint plate, a screw penetrates through the top of the side strip, and the bottom of the screw is in butt joint with the transmission mechanism. During use, the screw rod is adjusted towards the interior of the side strip, the screw rod moves to drive the moving plate to move downwards, the moving plate moves downwards to drive the telescopic rod to move downwards, the telescopic rod moves to drive the butt joint strip to move downwards, and th