Simple protection device for reserved paying-off hole

The utility model discloses a pay-off reserved hole simple protection device which comprises a floor plate, a pay-off reserved hole is formed in the surface of the floor plate, the upper side surface of the pay-off reserved hole is covered with a grid cover plate, two sets of penetrating holes are formed in the grid cover plate, and meanwhile L-shaped reinforcing screws are inserted into the two sets of penetrating holes in a penetrating mode. Threads are formed in the tops of the L-shaped reinforcing screws, and the ends, away from the threads, of the L-shaped reinforcing screws are fixedly connected with the protrusions. According to the simple protection device for the reserved hole for paying off, the grid cover plate is provided with a plurality of groups of grids, and laser can directly penetrate through the grids to realize paying off and point guiding during paying off and point guiding; measurement personnel do not need to disassemble and assemble cover plates on multiple floors, and the paying-off p