Self-locking I beam hoisting and positioning method

The invention relates to a self-locking I-shaped beam hoisting and positioning method, which comprises the following steps of: installing a first hoisting tool on an installed I-shaped beam section, installing a second hoisting tool on a to-be-installed I-shaped beam section, connecting a crane with the second hoisting tool, hoisting the to-be-installed I-shaped beam section to an installation position, penetrating two positioning rods between the two hoisting tools, and hoisting the to-be-installed I-shaped beam section to the installation position, adjusting nuts are installed at the two ends of each positioning rod, and the positions of the I-shaped beam sections to be installed are finely adjusted through the adjusting nuts; and then the crane and the lifting appliance are unhooked, and the to-be-installed I-shaped beam section and the installed I-shaped beam section are welded. According to the buckle type lifting appliance, the lifting efficiency and safety of the I-shaped beam are high, after the I-sha