Synchronous tightening tool of expanded coupling sleeve

The invention discloses a synchronous tightening tool of an expanded coupling sleeve, which comprises a bracket, an adjusting screw rod, a connecting rod, pin rolls, a pulley and a tool disk, wherein the tool disk comprises a first circumference and a second circumference, the first circumference of the tool disk is provided with a plurality of installing holes, the installing holes are matched with an action arm of a hydraulic wrench; the second circumference of the tool disk is provided with a continuous slideway, the pulley is connected with the slideway in a sliding way, the sliding rangeof the pulley on the slideway can enable the installing holes to cover all bolts on an inner ring of the expanded coupling sleeve; the pulley is connected with one end of the connecting rod by the pin roll, the other end of the connecting rod is connected with one end of the adjusting screw rod through the pin roll, and the other end of the adjusting screw rod is connected with the bracket so as to lead the tool disk to s