Sleeve mounting structure of a hearth roll for heat treatment furnace

摘要

The subject innovation relates to a sleeve attachment structure of the hearth roll for a heat treatment furnace, is fitted with the sleeve of strong ceramic material to a high temperature, so as to penetrate through the center of the sleeve in the longitudinal direction hearth roll for a thermal treatment consisting of a central shaft of iron material the flange in, is installed a buffer plate (30) between one end of the flange 22 and the sleeve 10 fixed to the central shaft 20 is inserted, mounted so as to be sliding on the central shaft (20) to ( 40) and is installed into the buffer plate 30 between the other end of the sleeve 10, the flange 40 includes a hearth roll for the heat treatment furnace, characterized in that the elastically supporting toward sleeve 10 by a spring 50 of the sleeve provides a mounting structure. With this structure, has the effect of damage to the ceramic sleeve forming the outer surface of the hearth roll is prevented.