WHEEL OF ROAD ROLLER Russian patent published in 2008 - IPC E01C19/28 

FIELD: transport; construction.

SUBSTANCE: working attachment of road roller consists of main frame (2), set of bus rods on axle of which additional frame (5) is secured consisting of skeleton semi-frames and locks (electromagnetic, pneumatic, hydraulic or other). Roller operates as follows. At first stages of compaction locks of skeleton semi-frames are open and do not contact rods' surface, i.e. roller works in normal regime when contact pressure is regulated by changing pressure inside rods. At conclusive stage, when compaction material has gathered certain strength and its further compaction requires high contact pressure, additional frame opens semi-frames around wheel axle, locks compress semi-frames tightly to rods with maximum inner presser in them. Thus rods and additional skeleton frame are integrated into single rigid construction securing high contact pressure during conclusive stage of compaction.

EFFECT: increase of materials compaction efficiency in road building.

4 dwg