Road works protective tunnel | 2010
Oil-pressure movement carts
Bissone lotto 7p-21
Officine Ghidoni SA
Device composed of two back to back carts for sound barriers assembling, that allow to work above the road and to ensure the highway traffic below to safely flow.
Cart mechanical carpentry about 44 Tons, width 10 m, height ranging from 4.25 to a maximum of 5.55 m, length 9m, translation speed 2 km/h , radius of curvature about 50 m.
The carts’ structure is mainly composed of an hard framework equipped with two abutments and one linking surface for abutments, that can be both moved, where it is possible to work and partially stock the material. An hydraulic crane for lifting the elements to be placed is meant to be used on one of the two carts. The 2 abutments’ geometry is variable, so as to balance the transverse height difference and to pass under a footpath. The height variation is 1.3m and it is gained by using 4 oil-pressure cylinders and 6 related telescopic side rails. Perimeter protections on the working surface prevent the material to leak. The carts’ translation and direction are wholly hydraulic and composed of 4 driving steering wheels with a diameter of 1’200. It is also possible to orthogonally move the carts, as opposed to the usual movement. A side panel allows the operator to perform each task.
The hydraulic control units and the related atlas power units are placed on the upper working surface. Four hydraulic telescopic stands stabilize the working carts.