| 摘要 |
FIELD: mechanical engineering. SUBSTANCE: furnace roller includes barrel with end bushes, water cooled shaft and intermediate supports mounted in clearance between barrel and shaft. Transverse sizes of shaft and barrel are connected by the following relation:, where D, d, D, dare outer and inner diameters of shaft and barrel, respectively; σ, σare yield points of materials of barrel and shaft, respectively at operating temperature. One of intermediate supports may be located in middle of barrel and length of its bearing surface on shaft is no less than 15 percent of barrel length. EFFECT: enhanced reliability. 14 cl, 1 dwg |
