Tower crane transition section machining tool

The tower crane transition section machining tool comprises a supporting mechanism and a fixing mechanism, the supporting mechanism comprises a supporting frame and a supporting block, and slotted holes are formed in the left end and the right end of the top of the supporting frame; the supporting blocks are arranged on front and rear sides of the top of the supporting frame; the multiple fixing mechanisms are arranged on the front side and the rear side in the supporting frame correspondingly, and each fixing mechanism comprises a base, a rotating rod, a connecting plate, a fixing plate, a threaded rod and a pressing head. One end of the base is connected with the inner side wall of the support frame, and the other end is provided with a horizontal slot; the rotating rod is horizontally and fixedly connected with an open groove in the base; the bottom of the connecting plate sleeves the rotating rod; one end of the fixing plate is connected with the top of the connecting plate, and the other end of the fixin