Synchronous bolt tightening device

The utility model provides a synchronous bolt tightening device which comprises a circular table. A driver is fixed at the center of the circular table. A driving shaft of the driver is arranged on the central axis of the circular table. A master gear is fixed on the driving shaft. Driven gears meshed with the master gear are distributed uniformly around the driving shaft. The number of the driven gears is equal to that of the screw holes in an end cap. One end of the shaft of each driven gear is arranged on the circular table, and a thread sleeve is arranged at the other end of the shaft of each driven gear. The synchronous bolt tightening device can fasten screws on the end cap conveniently and rapidly.