METHOD AND DEVICE FOR GROUND AND MATERIAL COMPACTION WITH ROLLERS (VARIANTS) Russian patent published in 2007 - IPC E01C19/28 

FIELD: construction, particularly road-rollers for ground and material compaction during road and aerodrome building.

SUBSTANCE: method in accordance with the first embodiment involves rolling rollers over surface to be compacted; creating contact stresses in support surface of the rollers; converting static load applied to support surface into dynamic action by rotating central roller connected to crankshaft relatively side rollers, wherein central roller length is equal to sum of side roller lengths. Method in accordance with the second embodiment involves rolling rollers over surface to be compacted; creating contact stresses in support surface of the rollers with weights; converting static weight action upon support surface into dynamic action by simultaneous rotating central and side rollers connected to crankshafts relatively crankshaft journal-bearings fastened to roller frame to provide 180° phase shift of the crankshafts. Device in accordance with the first embodiment comprises roller rotation drive mechanism, wherein central roller is rotatingly supported by crankshaft bearings. The crankshaft rests upon bearings installed in side rollers. Side roller supports are made as bearings fastened to roller frame. Crankshaft drive mechanism is made as hydraulic drive and gearings. Roller rotation drive mechanism includes hydraulic drive and tooth gearings. Device is accordance with the second embodiment comprises crankshaft drive mechanism, wherein central roller provided with pneumowheels is supported by crankshaft so that central roller may freely rotate by bearings. Crankshaft is installed on roller frame and supported by bearing assembly. Side rollers with pneumowheels may freely rotate in bearings fastened to roller frame. Crankshaft drive mechanism is made as hydraulic drive and gearings.

EFFECT: simplified device structure and increased sealing efficiency.

5 cl, 7 dwg