Double-curvature blast furnace downcomer hoisting butt joint tool

The invention relates to the technical field of steel pipe construction, in particular to a double-curvature blast furnace downcomer hoisting butt joint tool which is characterized in that the ends of two pipelines are tightly hooped through a fixed inner ring and a butt joint inner ring respectively, fasteners are inserted into a fixed outer ring and a butt joint outer ring, and the inner ends of the fasteners abut against the fixed inner ring and the butt joint inner ring; the fixed inner ring and the fixed outer ring as well as the butt joint inner ring and the butt joint outer ring are fixed at a certain angle, and during butt joint, the fixed outer ring and the butt joint outer ring are spliced, clamped and fixed through the teeth and the tooth grooves, so that two pipelines are in tight butt joint, construction operation is facilitated, and the disassembly and assembly process is greatly simplified. The ball body is clamped through the spherical fixing groove, so that the ball body can freely rotate wit