Unit curtain moves back construction system at layer position

The utility model discloses an unit curtain moves back construction system at layer position, at least two including adjacent setting are moved back a layer unit plate block, move back layer unit plate block and include along the first crossbeam of vertical level in proper order setting, move back layer crossbeam and second crossbeam, move back the outside terminal surface of the first crossbeam of outside terminal surface withdrawal of layer crossbeam, the outside terminal surface of the outside terminal surface withdrawal second crossbeam of first crossbeam to form the installation clearance between the top surface of bottom, this terminal surface that moves back layer crossbeam and the second crossbeam of this terminal surface of first crossbeam, first crossbeam is pegged graft on the top of moving back layer crossbeam through the grafting structure, is provided with seal structure in the installation clearance, and this seal structure covers on the top surface of second crossbeam, its inboard terminal sur