Automatic spraying system for ship body

The utility model discloses an automatic hull spraying system which comprises a base, a first vertical beam and a second vertical beam are fixed to the base, and the top of the first vertical beam andthe second vertical beam are assembled and fixed. A fourth cross beam is fixed to the top of the second vertical beam and located below the third cross beam, and the fourth cross beam is fixedly assembled with the two third vertical beams; a first lifting belt wheel and a second lifting belt wheel are further mounted at the tops of the two third vertical beams correspondingly, and a first auxiliary lifting belt wheel and a second auxiliary lifting belt wheel are mounted at the bottoms of the two third vertical beams correspondingly; the first lifting belt wheel is connected with the first auxiliary lifting belt wheel through a first synchronous belt; the second lifting belt wheel is connected with the second auxiliary lifting belt wheel through a second synchronous belt; the first liftingbelt wheel and the second