Steel arch bridge deck slab side mold welding mechanism

The utility model discloses a steel arch bridge deck slab side mold welding mechanism, and relates to the technical field of welding mechanisms. A pair of bases is symmetrically installed on the two sides of the bottom end of the installation table, the bases corresponding in the front-back direction are rotationally connected with supporting rollers through bearing seats, first sliding rails are installed on the two sides of the bottom end of the installation table respectively and are in sliding connection with first sliding blocks, and side jacking devices are fixedly installed on the first sliding blocks. The two sides of the double-threaded rod penetrate through inner cavities of the side jacking devices respectively to be rotationally connected with the side walls of the mounting table, the first motor is fixedly mounted on the outer side of the mounting table, the output end of the first motor is fixedly connected with the double-threaded rod, and the welding device is mounted at the top end of the mou