Large box culvert hoisting device and hoisting, transporting and mounting method thereof

The invention discloses a large box culvert hoisting device and a hoisting, transporting and mounting method thereof, and relates to the technical field of prefabrication, transporting and mounting of large box culverts, in particular to a large box culvert hoisting device which is prefabricated on land and mounted on water and a hoisting, transporting and mounting method thereof. Comprising a box culvert body and an upper sling, two symmetrical through hole channels are formed in a bottom plate of the box culvert body, and a lower sling penetrates through the through hole channels and then is fixed to a lifting frame; the through hole channel is located between two layers of reinforcing meshes of a bottom plate of the box culvert body, the distance between the center of the through hole channel in the horizontal direction and the two ends of the box culvert body is one fourth of the length of the box culvert body, the two ends of the through hole channel are semicircular, and the thickness of a reinforcing s