Multifunctional erecting frame for carrier rocket and mounting method

The invention relates to the field of spaceflight ground launching equipment, and provides a carrier rocket multifunctional erecting frame which comprises an erecting frame front section, an erecting frame middle section and an erecting frame tail section which are connected from front to back in sequence. The erecting frame tail section and the erecting frame middle section are connected and fastened through a double-end stud, and the connecting end faces of the erecting frame middle section and the erecting frame front section are positioned and butted through the profiles of a rectangular concave flange and a convex flange; the sections of the erecting frame tail section, the erecting frame middle section and the erecting frame front section are of a concave structure. The invention further provides an installation method of the multifunctional erecting frame of the carrier rocket. According to the invention, the rigidity and the strength are strong enough, large-tonnage reliable bearing and erecting can b