Building PC component storage rack

The utility model discloses a building PC component storage rack which comprises two base plates, a plurality of stand columns are fixed to the upper end face of each base plate, two connecting blocks are fixed between the opposite faces of every two adjacent stand columns, two movable seats are symmetrically and movably arranged on each connecting block, a side groove is formed in one side of each movable seat, and a side groove is formed in the other side of each movable seat. Rotating arms are rotationally arranged in the side grooves, and each connecting block is provided with two driving assemblies used in cooperation with the corresponding moving seats. When the concrete wallboard storage device is used, a concrete wallboard to be stored is vertically placed between the two pairs of stand columns which are used in a matched mode through a crane, then an operator turns over in the direction close to the concrete wallboard to open the corresponding rotating arms, and then the moving seats move in the dire