The present invention discloses a novel bridge device. The device comprises an engine base, a matrix arranged on the engine base, push-up block, and a plug part and a plug which are arranged in the push-up block, a monitoring probe is arranged at the center of the front end surface of the matrix, reflectors are applied and arranged at the outer surface of the engine base of the lower portion of the matrix, a tight plugging groove is arranged in the end surface of the right side of the plug part, locking grooves are symmetrically arranged at the upper and lower inner walls of the tight plugging groove, sliding grooves extended and arranged towards two sides run through the internal portions of the locking grooves, the plug part at the left side of the tight plugging groove is internally provided with control cavities, baffles are arranged between the control cavities and the extension sections of the left sides of the sliding grooves, a first swivel pin shaft is arranged at the center of the control center, second swivel pin shafts extended and arranged towards two sides are symmetrically arranged in the control cavities at the upper and lower sides of the first swivel pin shaft, the extension sections of the right sides of the second swivel pin shafts run through the baffles and are in rotation matching connection, push blocks are in sliding matching connection in the sliding grooves, spiral thread holes are arranged in the end surfaces of the left sides of the push blocks, and first threaded rods are matchingly connected with the spiral threads in the spiral thread holes. The structure is simple, the operation is convenient, the locking stability is high, and the safety is high.