Fixing assembly for butt joint of hubbed flanges

The utility model discloses a fixing assembly for hubbed flange butt joint, which belongs to the field of hubbed flange installation, is fixedly installed on a flange plate of a hubbed flange located above, and comprises two groups of clamping devices symmetrically arranged on the flange plate, each clamping device comprises an arc-shaped fixing piece, an upper clamping block, a lower clamping block and a lifting lug, the flange plate assembling device is simple in structure, rotation of the flange plate in the flange plate assembling process is achieved through the fixing assembly fixed to the upper flange plate, and due to the effect of the arc-shaped fixing pieces on the two sides, it can be guaranteed that the upper flange plate and the lower flange plate are always coaxial in the rotating process; and when the flange hole of the upper flange plate is aligned with the flange hole of the lower flange plate, rotation is stopped, the fastening assembly is installed, and therefore butt joint installation of t