Auxiliary bracket and boiler mounting device

The utility model relates to the technical field of boiler installation, in particular to an auxiliary bracket and a boiler installation device. Comprising a supporting table body and a bracket assembly, supporting vertical rods are symmetrically and fixedly arranged on the supporting table body, a transverse rod is fixedly arranged on the supporting vertical rods, the bracket assembly is connected to the transverse rod, and the bracket assembly assists in supporting a boiler; the bracket assembly comprises a rectangular regulation and control groove, a positioning clamping groove, a tow bar, a limiting block, a positioning threaded hole, a positioning threaded column, a handle, an auxiliary supporting cambered surface, a limiting plate, a locking threaded groove, a locking screw, a rotary knob and a stable auxiliary protruding block. The boiler is supported in an auxiliary mode through the arranged bracket assembly, the towbar is movably arranged in the rectangular regulation and control groove, adaptive sup