Retractable suspended scaffolding on a self-propelled truck, particularly adapted for maintenance work on road-bridges and the like

摘要

There is disclosed a retractable suspended scaffolding mounted on a self-propelled truck which is particularly adapted for maintanence work on structures that are situated along roadways and at areas of difficult access. The scaffolding includes an operating gangway that is arranged in posiiton below the planking of a bridge, a viaduct or the like, by means of a set of mechanisms that are operated by oleodynamic jacks, hydraulic motors and manually controlled reduction units.