Special-shaped beam butt welding tool

The utility model discloses a special-shaped beam butt welding tool, which belongs to the technical field of welding tools and comprises a base, and the top of the base is fixedly connected with a first electric hydraulic push rod. The device has the beneficial effects that a first electric hydraulic push rod, a first motor and a second motor are arranged, and the second motor drives a right-hand threaded column and a left-hand threaded column to rotate, so that the right-hand threaded column and the left-hand threaded column rotate in two second threaded cylinders correspondingly, and the two second threaded cylinders drive two limiting plates to get close to each other correspondingly; a first motor drives a first threaded column to rotate, so that the first threaded column rotates in a first threaded cylinder, the first threaded cylinder drives a connecting assembly to move through a first connecting block, and the connecting assembly drives a supporting shell to move; and the supporting shell drives the I