METHOD FOR LAYING OF MATERIAL UNLOADED FROM SCRAPER Russian patent published in 1994 - IPC

FIELD: civil engineering. SUBSTANCE: material is unloaded through two bottom openings directly under the bucket wheels which provides for compaction of material. Material is unloaded into backfilled trench with an allowance for compaction. For this purpose hopper bottom has two openings with adjustable gates which are disposed coaxially with, and in front of, corresponding bucket wheels, between loading openings and hopper wheels. EFFECT: higher efficiency. 5 dwg