| 摘要 |
FIELD: materials handling facilities. ^ SUBSTANCE: invention relates to turntables of cranes and other load lifting machines. Proposed turntable consists of fixed and movable upper and lower rings and roller solids of revolution arranged in cress-cross manner and installed in raceways. Ring step formed on raceways by rollers worn along ring is eliminated by sphere of ball solids of revolution installed between roller solids of revolution. ^ EFFECT: increased service life turntable. ^ 4 dwg |
