Shock insulation support with fixed area expansion structure and use method of shock insulation support

The invention discloses a shock insulation support with a fixed area expansion structure and a using method thereof, the shock insulation support comprises two steel plate seats, a plurality of rubber layers and steel plate layers which are distributed at intervals are arranged between the steel plate seats, and the rubber layers and the steel plate layers are adhered and fixed; the connecting holes are formed in the front end and one side of the steel plate base, studs are installed in the connecting holes and rotationally connected with the steel plate base, connecting blocks are arranged at the rear end and the other side of the steel plate base and matched with the connecting holes in an inserted mode, screw holes are formed in the connecting blocks, and the screw holes are matched with the studs; the mounting holes are formed in the periphery between the steel plate seats, a fixing mechanism is mounted between the upper mounting hole and the lower mounting hole, and positioning columns are arranged at th