Method and devices for processing a ground surface, in particular for coating a merck sharp amp; dohme chaussee

摘要

The table (23) for extruding the covering (39) is placed behind the tracks (2) and thus can have a greater width than the overall width at right angles to the tracks. …??The table is carried by a bridge chassis (27) articulated on the frame (1), carried by the tracks, along a transverse axis (XX). At the rear, the bridge chassis (27) rests on the fresh covering (39) by means of air cushions (32). A dragged blade (58) emits a ray (63) parallel to the surface (39) as detected by the blade. A detector (64) carried by the table (23) and receiving the ray (63) detects the height position of the table (23) relative to the surface (39). Jacks (38) correct the height position of the tool as a function of this detection . A ballast (42) is displaced automatically along the bridge chassis (27) in order to adjust the pressure in the air cushions (32). …IMAGE…