Lifting device for split bridge

The invention discloses a split type hoisting device for bridging, and relates to the technical field of hoisting devices, the split type hoisting device comprises a hoisting support, a sliding trolley, a hoisting steel rope and a hoisting frame, the outer walls of the two sides of the sliding trolley are fixedly connected with L-shaped tensioning seats, and the outer walls of the two sides of each L-shaped tensioning seat are fixedly connected with a second U-shaped seat, a tensioning mechanism, a speed reducing part and a pressing assembly. Through cooperation of parts such as a tensioning mechanism and a tensioning steel rope, the output end of a hydraulic cylinder drives a U-shaped connecting rod to drive an inclined plate to contract, so that a first guide wheel is pushed to drive an inclined guide block to move in the direction of the tensioning steel rope through a first guide seat and a rectangular guide rod, and two sets of tensioning wheels abut against the outer wall of the tensioning steel rope; a