Operation method of post insulator dismounting tool

The invention provides an operation method of a post insulator dismounting tool, the tool comprises a butt joint assembly, a clamping assembly, a lifting assembly, a transmission assembly and a sleeve assembly, and the sleeve assembly and the clamping assembly are located on the same axis; the clamping assembly is connected with the outer edge of the post insulator in a matching manner; the sleeve assembly is connected with a fixing nut at the bottom of the post insulator, and a fixing nut locking device is arranged in the sleeve assembly; the butt-joint assembly is in butt joint with external equipment, the external equipment provides power to control the butt-joint assembly to rotate, and the butt-joint device is characterized in that the butt-joint assembly transmits rotating force to the lifting assembly and the sleeve assembly respectively, and the lifting assembly controls a sleeve to ascend and descend while the sleeve assembly rotates to screw the fixing nut. When the fixing nut is screwed, the screwe