Ultra-long lintel unit type supporting device

The utility model provides an ultra-long lintel unit type supporting device, and belongs to the field of building construction. According to the technical scheme, the device comprises a beam body supporting piece arranged on the periphery of the bottom of a beam body, a telescopic supporting rod and the beam body supporting piece are arranged below the beam body supporting piece, side supporting assemblies are arranged on walls on the two sides of the beam body, the beam body supporting piece comprises a supporting bottom plate, and a plurality of rectangular mounting grooves are formed in the supporting bottom plate; u-shaped limiting supporting pieces are arranged in the multiple rectangular mounting grooves, the end faces of the U-shaped limiting supporting pieces are flush with the end face of the supporting bottom plate, the telescopic supporting rod comprises a bottom supporting plate, an outer sleeve rod is fixedly arranged on the bottom supporting plate, a threaded inner sleeve rod is inserted into th