Prefabricated fixing assembly for top steel structure of washing plant

The utility model discloses a prefabricated fixing assembly for a top steel structure of a washing plant. The prefabricated fixing assembly comprises a bottom support, a side face support, a connecting frame, a pressure release groove and a release groove blocking piece. The device comprises a movable block, a fixed frame, a connecting shaft, an arc-shaped steel beam, a spring, a pressure rod and a partial pressure connecting rod, the arc-shaped steel beam is a supporting structure at the top of the plant; fixing frames are arranged at the two ends of the arc-shaped steel beam; a protrusion hinged to the fixed frame is arranged in the middle of the movable block. The movable block moves in the pressure release groove; the top and the side part of the pressure release groove are bidirectionally slotted; a pressure rod is arranged on the outer side of the movable block; a spring is nested on the outer side of the pressure rod; a bottom bracket is arranged at the bottom of the pressure release groove; the movabl