Safety fence for highway maintenance

The utility model relates to the technical field of safety fences, in particular to an expressway maintenance safety fence which comprises a first assembly, and second assemblies are installed on the two sides of the first assembly. And the first assembly comprises a stand column, a driving rod penetrates through the interior of the stand column up and down, and a cross-shaped handle is installed above the driving rod. According to the safety fence, due to the arrangement of the first assembly, the clamping blocks are clamped into the grooves, the positions of the stand columns are fixed, during subsequent disassembly, replacement and maintenance, the cross-shaped handles can be rotated in the reverse direction, the stand columns can be pulled out of the inverted-T-shaped grooves, operation is easy and fast, a large amount of time is saved, and labor intensity is reduced; the damping springs play a role in energy dissipation and vibration reduction, under the action of the damping springs, the impact force of