| 摘要 |
<p>PURPOSE:To enhance impact resistance of rotary drum unit by constituting a drum supporting means for fastening upper and low drums of a plurality of columnar drum supporting members. CONSTITUTION:Under a state where planes formed on the outer side faces of upper and lower drums 2, 3, i.e., abutting faces 2A, 2B and 3A, 3B, abut on abutting planes SA, SB, two drum supporting members 21A, 21B are fastened to the upper and lower drums 2, 3. Since fixing width of the upper and lower drums 2, 3 between two rectangular parallelepiped drum supporting members 21A, 21B can be widened, as required, a rotary drum unit 20 having high impact resistance can be obtained.</p> |
