APPARATUS FOR DEEP VIBRATIONAL WORKING OF MATERIALS Russian patent published in 1998 - IPC

FIELD: construction industry, in particular, compaction of concrete mixtures, activation of consolidated or frozen bulk and lump materials. SUBSTANCE: vibrational unit has comb of vibrational tips penetrated into material to be worked. Comb carries high-frequency vibration exciter. Platform is connected with comb through flexible members and mounted on boom of basic machine. Flexible enclosure communicated with fluid medium pulsator is positioned between comb and platform for transmitting low-frequency vibrations to vibrational tips. Vibrational tips may be made in the form of rods of variable section to provide wedging effect in concrete mixture. EFFECT: increased efficiency and enhanced reliability in operation. 2 cl, 1 dwg