Bridge monitoring data inspection transmission device and transmission method

The invention relates to a bridge monitoring data checking and transmitting device which comprises a plurality of sensors for data monitoring and a wireless transmitting mechanism. The unmanned aerial vehicle drives the transmitting antenna to lift off, receiving connection with signals can be rapidly completed in an area with poor signals, meanwhile, when the unmanned aerial vehicle lifts off, a second motor on a sliding plate drives a threaded rod to rotate and is matched with a threaded sleeve connected with the threaded rod, and a rotating plate is driven to rotate and descend at the same time; at the moment, a second motor synchronously descends along a guide rod through a sliding plate, a ball seat rotates along with a rotating plate, meanwhile, a first movable rod drives a first piston to move upwards in a bottom cylinder, a spring is compressed, air in a horizontal cylinder is sucked into the bottom cylinder, a second piston in the bottom cylinder drives a second movable rod to move, and translation o