Positioning device for fabricated building construction

The invention discloses a positioning device for fabricated building construction, which structurally comprises an auxiliary plate, a buffer frame device, a connector, a support frame, a counterweight table and a fixed base, when the device is used, through the arranged mechanism, the positioning device can avoid the situation that in the hoisting process of a fabricated column, the lower space is narrow and inconvenient to observe, and the hoisting efficiency is greatly improved. The problems that in the prior art, an assembly type column is inserted into a hole in the lower portion of the assembly type column, so that repeated alignment is often needed all the time, the assembly type column shakes violently easily during hoisting, an operator needs to adjust the assembly type column continuously, and much time is wasted easily are solved. The equipment can be clamped and fixed to a platform cross beam or other external stress points through the arranged fixing base; and meanwhile, through cooperation of the