| 摘要 |
FIELD: home's ground management. SUBSTANCE: forcing bed has carcass with U-shaped canted frames interconnected by longitudinal strips and positioned at both sides of alley. Rotary arced cross-pieces are mounted on shafts fixed on upper strip. Brackets for mounting side strips are secured on columns. EFFECT: increased efficiency, simplified construction and enhanced reliability in operation. 2 cl, 2 dwg |
