| 摘要 |
<p>A roller hearth kiln which has a plurality of ceramic rollers (21) arranged across a kiln tunnel, which rotate to move articles to be heat treated. A rotary drive shaft (27) is connected to each ceramic roller (21) through a holder (30) and a cylindrical metallic connection pipe (32) which is mounted on the other end of the holder and which includes a positioning aperture (46). Resilient means (44) are fixedly mounted at one end on the holder, the other end of the resilient means being engageable with the positioning aperture (46) of the connection pipe. The connection pipe (32) has open-ended slots (48) and is resiliently clamped to the roller by a transverse bolt (52). The opposite driven end of the ceramic roller is supported on a pair of metallic receiver rollers through a metallic coil spring which is wound on the driven end of the ceramic roller.</p> |
