Punching structure convenient to maintain and used for bridge punching machine

The punching structure for the bridge punch press is convenient to maintain and comprises a workbench fixed to the bridge punch press, a plurality of punching bases and a plurality of punching machines, the punching bases and the punching machines are located above the workbench, one side of the top of the workbench is fixedly connected with a folding frame, the bottom of the folding frame is fixedly connected with a hydraulic rod, and the hydraulic rod is fixedly connected with the hydraulic rod. The output end of the hydraulic rod is fixed to the top of the punching machine. According to the convenient-to-maintain punching structure for the bridge punching machine, the punching control mechanism is arranged at the top of the workbench, and a rotating shaft, a first transmission wheel and a damping sleeve are utilized, so that the placing frame can rotate along with the rotating shaft when the limiting mechanism is not limited, and the placing frame can rotate along with the rotating shaft when the limiting