Novel cantilever device for building engineering construction

The utility model discloses a novel cantilever device for building engineering construction, and belongs to the technical field of cantilever devices. A novel cantilever frame device for building engineering construction comprises a supporting rod, a plurality of clamping plates are fixedly arranged at the two ends of the supporting rod in an annular array structure respectively, fixing plates are arranged above and below the supporting rod respectively, and mounting grooves are formed in the inner sides of the fixing plates; a plurality of mounting holes are formed in the inner side of the lower fixing plate in a rectangular array structure, a plurality of first sliding grooves are formed in the inner side of each fixing plate in an annular array structure, second sliding grooves are formed in the two sides of the inner wall of each first sliding groove correspondingly, a positioning plate is slidably connected to the inner wall of each first sliding groove, and sliding blocks are fixedly arranged on the two