Road settlement measuring device

The utility model discloses a road settlement measuring device which comprises stand columns, fixing plates welded to the tops of the two sets of stand columns, four sets of ground nails symmetrically installed on the tops of the two sets of fixing plates in a penetrating mode, supporting plates welded to the tops of the two sets of stand columns, and Z-shaped plates movably installed on the tops of the supporting plates in a penetrating mode. An electric push rod is installed at the bottom of the supporting plate, the push rod bottom end of the electric push rod is connected with the top of a bottom plate of a Z-shaped plate, and first scales are symmetrically engraved on the two sides of the Z-shaped plate. By installing the supporting plate, the electric push rod, the Z-shaped plate and the first ruler, the critical value of settlement data in unit time is calculated according to the actual measurement condition before measurement, then the Z-shaped plate is driven by the electric push rod to move up and d