Anti-loosening rectangular prism mounting bracket

The utility model relates to the technical field of optical device mounting racks. The utility model relates to a prism mounting bracket, in particular to an anti-loosening rectangular prism mountingbracket. The device comprises a fixed supporting seat, a supporting rod mounting seat is fixedly connected to the middle of the upper side of the fixed supporting seat; the upper side of the supporting rod mounting base is fixedly connected with a prism supporting rod; the upper side of the prism supporting rod is fixedly connected with a rotary connecting block; the left side of the rotary connecting block is rotationally connected with a rotary seat; the left side of the rotating seat is fixedly connected with a U-shaped bracket; a prism mounting bracket body is rotatably connected to the middle of the left side of the U-shaped bracket; a right-angle prism body is arranged in the middle of the left side of the first support base. And the left side of the first support base is sleeved with a side edge protection